Gui, Qiuye; Fehr, Hendrik; Gensior, Albrecht:
Energy control of modular multilevel converters for drive applications at low frequency using general averaging
#!ilm_mods_00010879!#
In: IEEE transactions on power electronics: PE ; a publication of the Power Electronics Council, vol. 39 (2024), no. 5, pp. 5239–5256
DOI: https://doi.org/10.1109/TPEL.2024.3360000
Fießer, Sven; Schwalbe, Ulf:
Fast optimization algorithm for switched mode power supplies: minimal data-sheet-driven algorithms enhancing active and passive component performance
#!ilm_mods_00016106!#
In: Proceedings - 2024 2nd International Conference on Smart Technologies for Power and Renewable Energy, SPECon 2024 (ISBN 9798350383041), (2024)
DOI: https://doi.org/10.1109/SPECon61254.2024.10537364
Hamouda, Noureddine; Babes, Badreddine; Kahla, Sami; Hamouda, Cherif; Rädel, Uwe:
An optimized FO-PID controller and predictive current control of the APF connected AWPS for power quality improvement
#!ilm_mods_00005396!#
In: Przeglad elektrotechniczny, vol. 99 (2023), no. 5, pp. 102–107
DOI: https://doi.org/10.15199/48.2023.05.19
Hartwig, Raphael:
Optimierter Multilevel-GaN-Umrichter für Niederspannungsindustrieanwendungen
#!ilm_mods_00006129!#
Ilmenau : Universitätsverlag Ilmenau, 2023. - ISBN 978-3-86360-275-8
DOI: https://doi.org/10.22032/dbt.57451
Xie, Jun; Suberski, Martin; Henneberg, Dustin; Rädel, Uwe; Petzoldt, Jürgen:
A study on simplification of commutation methods for three-phase direct matrix converters
#!ilm_mods_00008069!#
In: 2023 25th European Conference on Power Electronics and Applications (EPE′23 ECCE Europe): 4-8 Sept. 2023 : conference location: Aalborg, Denmark (ISBN 979-8-3503-1678-0), (2023), p. P.1–P.7
DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264260
Fehr, Hendrik; Gensior, Albrecht; Heidrich, Tobias; Möckel, Andreas:
Comparison of two flywheel concepts for the support of microgrids
#!ilm_mods_00008070!#
In: 2023 25th European Conference on Power Electronics and Applications (EPE′23 ECCE Europe): 4-8 Sept. 2023 : conference location: Aalborg, Denmark (ISBN 979-8-3503-1678-0), (2023), p. P.1–P.8
DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264566
Xie, Jun; Suberski, Martin; Henneberg, Dustin; Petzoldt, Jürgen; Li, Ying; Watson, Alan; De Novaes, Yales Romulo:
A modified control strategy of neutral-point clamped converter-fed PMSM drives with engergy storage systems
#!ilm_mods_00008075!#
In: 2023 25th European Conference on Power Electronics and Applications (EPE′23 ECCE Europe): 4-8 Sept. 2023 : conference location: Aalborg, Denmark (ISBN 979-8-3503-1678-0), (2023), p. P.1–P.7
DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264367
Gui, Qiuye; Fehr, Hendrik; Gensior, Albrecht:
Optimized stationary operating regime and common-mode voltage design for modular multilevel converters in drive applications at high frequency
#!ilm_mods_00008072!#
In: 2023 25th European Conference on Power Electronics and Applications (EPE′23 ECCE Europe): 4-8 Sept. 2023 : conference location: Aalborg, Denmark (ISBN 979-8-3503-1678-0), (2023), p. P.1–P.10
DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264464
Fießer, Sven; Schwalbe, Ulf:
Highly efficient and flexible optimization algorithm for magnetic components in power electronics with comprehensive thermal and power loss analysis
#!ilm_mods_00008078!#
In: 2023 25th European Conference on Power Electronics and Applications (EPE′23 ECCE Europe): 4-8 Sept. 2023 : conference location: Aalborg, Denmark (ISBN 979-8-3503-1678-0), (2023), p. P.1–P.8
DOI: https://doi.org/10.23919/EPE23ECCEEurope58414.2023.10264583
Cai, Hui; Rädel, Uwe; Schlegel, Steffen; Westermann, Dirk:
Integrated HiL simulation of multiple real-time simulator platforms to study the interactions in a multi-converters network
#!ilm_mods_00010446!#
In: Powering solutions for decarbonized and resilient future smartgrids: 2023 IEEE PES ISGT EUROPE : October 23-26, Grenoble, France (ISBN 979-8-3503-9679-9), (2023), pp. 1–5
DOI: https://doi.org/10.1109/ISGTEUROPE56780.2023.10407782
Hartwig, Raphael; Hensler, Alexander; Ellinger, Thomas:
Performance evaluation of a GaN flying capacitor multilevel inverter for industrial applications
#!ilm_mods_00000499!#
In: CIPS 2022: 12th International Conference on Integrated Power Electronics Systems : 15-17 March 2022March, 15-17, 2022 Berlin, Germany (ISBN 978-3-8007-5758-9), (2022), pp. 508–516
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9861941
Wei, Jianfeng; Rädel, Uwe; Petzoldt, Jürgen:
Design of LCL filter for DC converter by using analytical equations
#!ilm_mods_00000559!#
In: PESS 2021 – Power and Energy Student Summit: Conference Proceedings ; 25 – 26 November 2021, University of Kassel, Germany, Online Conference (ISBN 978-3-8007-5716-9), (2022), pp. 46–51
Alexandrov, Ivan V.; Nos, Oleg V.; Ellinger, Thomas; Sarakhanova, Regina Yu.:
Per-Phase Output Current Control of 4-Leg Active Power Filter Based on Adaptive Notch Filter
#!ilm_mods_00000566!#
In: 2022 IEEE 23rd International Conference of Young Professionals in Electron Devices and Materials: EDM : June 30-July 4, Russia, 2022 (ISBN 978-1-6654-9805-0), (2022), pp. 388–393
DOI: https://doi.org/10.1109/EDM55285.2022.9855148
Gnärig, Lasse; Gensior, Albrecht; Laza, Saioa Burutxaga; Carrasco, Miguel; Reincke-Collon, Carsten:
Model reduction using singular perturbation methods for a microgrid application
#!ilm_mods_00001192!#
In: 2022 24th European Conference on Power Electronics and Applications (EPE′22 ECCE Europe): 5-9 Sept. 2022 (ISBN 978-1-6654-8700-9), (2022)
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9907022
Xie, Jun; Henneberg, Dustin; Suberski, Martin; Kusebauch, Manuel; Rädel, Uwe; Petzoldt, Jürgen:
An optimized compensation strategy of direct matrix converter-fed PMSM drives with field weakening under unbalanced supply conditions
#!ilm_mods_00001193!#
In: 2022 24th European Conference on Power Electronics and Applications (EPE′22 ECCE Europe): 5-9 Sept. 2022 (ISBN 978-1-6654-8700-9), (2022)
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9907022
Fehr, Hendrik; Gensior, Albrecht; Möckel, Andreas; Atzler, Frank; Roß, Tilo; Reincke-Collon, Carsten:
Feasibility assessment of variable-speed generator set concepts with focus on rating of power electronic equipment
#!ilm_mods_00001194!#
In: 2022 24th European Conference on Power Electronics and Applications (EPE′22 ECCE Europe): 5-9 Sept. 2022 (ISBN 978-1-6654-8700-9), (2022), p. P.1–P.10
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9907022
Xie, Jun; Henneberg, Dustin; Suberski, Martin; Ellinger, Thomas; Rädel, Uwe; Petzoldt, Jürgen:
A simplified braking method for direct matrix converter-fed PMSM drives with consideration of avoiding regenerative energy
#!ilm_mods_00001195!#
In: 2022 24th European Conference on Power Electronics and Applications (EPE′22 ECCE Europe): 5-9 Sept. 2022 (ISBN 978-1-6654-8700-9), (2022), p. P.1–P.8
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9907022
Gui, Qiuye; Fehr, Hendrik; Gensior, Albrecht:
Stability assessment and optimization of MMC energy balancing for drive applications at standstill using an averaging approach
#!ilm_mods_00001196!#
In: 2022 24th European Conference on Power Electronics and Applications (EPE′22 ECCE Europe): 5-9 Sept. 2022 (ISBN 978-1-6654-8700-9), (2022), p. P.1–P.10
URL: https://ieeexplore.ieee.org/servlet/opac?punumber=9907022
Hamouda, Noureddine; Babes, Badreddine; Boutaghane, Amar; Gensior, Albrecht; Rädel, Uwe:
Enhancing the width of molten pool and the tracking of welding current in gas metal arc welding processes using a robust PIλDμ controller
#!ilm_mods_00003380!#
In: Proceedings of the 2022 International Conference of Advanced Technology in Electronic and Electrical Engineering (ICATEEE) (ISBN 979-8-3503-4673-2), (2022)
DOI: https://doi.org/10.1109/ICATEEE57445.2022.10093761
Seifert, Florian:
Wirkungen von Entladungen auf dielektrische Grenzflächen bei Gleichspannung und überlagerter mittelfrequenter Wechselspannung
#!ilm_mods_00002107!#
Ilmenau, 2022
DOI: https://doi.org/10.22032/dbt.55251
Gensior, Albrecht:
Sliding-mode control for interleaved operation of parallel-connected three-phase active front-ends
#!ilm_mods_00003115!#
In: IEEE journal of emerging and selected topics in power electronics, vol. 10 (2022), no. 6, pp. 6545–6556
DOI: https://doi.org/10.1109/JESTPE.2021.3113937
Fehr, Hendrik; Gensior, Albrecht:
MMC stationary operating regimes in case of periodic power demand on the DC side
#!ilm_mods_00003151!#
In: IEEE transactions on power electronics: PE ; a publication of the Power Electronics Council, vol. 37 (2022), no. 7, pp. 7640–7651
DOI: https://doi.org/10.1109/TPEL.2022.3143318
Cai, Hui; Song, Xinya; Jiang, Teng; Rädel, Uwe; Schlegel, Steffen; Westermann, Dirk:
Reinforcement learning-assisted controller parameterization based on improving oscillatory stability in converter-dominant power system
#!ilm_mods_00001569!#
In: 2022 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe): proceedings of 2022 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe) : October 10th-12th, 2022, Novi Sad, Serbia (ISBN 978-1-6654-8033-8), (2022)
DOI: https://doi.org/10.1109/ISGT-Europe54678.2022.9960583
Gensior, Albrecht:
Modellbildung und Regelung leistungselektronischer Systeme unter Verwendung nichtlinearer Entwurfsverfahren
#!ilm_mods_00002092!#
Düren : Shaker Verlag, 2022. - ISBN 978-3-8440-8858-8
(Berichte aus der Elektrotechnik)
Baranov, Evgeny; Kuguchev, Dmitry; Smirnov, Pavel; Popov, Vladimir:
The investigation of a hybrid cascaded multilevel matrix converter
#!ilm_mods_00000689!#
In: 2021 IEEE 22nd International Conference of Young Professionals in Electron Devices and Materials (EDM): proceedings, Aya, Altai Region, Russia, June 30-July 4, 2021 (ISBN 978-1-6654-1498-2), (2021), pp. 360–364
[22nd IEEE International Conference of Young Professionals in Electron Devices and Materials, EDM 2021]
DOI: https://doi.org/10.1109/EDM52169.2021.9507718
Sidorov, Andrey; Zinoviev, Gennady; Petzoldt, Jürgen:
Solid state transformer as a part electrical circuit for data center application
#!ilm_mods_00000690!#
In: 2021 IEEE 22nd International Conference of Young Professionals in Electron Devices and Materials (EDM): proceedings, Aya, Altai Region, Russia, June 30-July 4, 2021 (ISBN 978-1-6654-1498-2), (2021), pp. 354–359
DOI: https://doi.org/10.1109/EDM52169.2021.9507640
Flatt, Holger; Schriegel, Sebastian; Westerkamp, Jan F.; Mackensen, Ingo; Gensior, Albrecht; Jasperneite, Jürgen:
Ethernet-basierte Ultra-Hochgeschwindigkeitskommunikation für eine Regelung dezentraler Einspeiseumrichter von Windenergieanlagen
#!ilm_mods_00009155!#
In: Kommunikation in der Automation (KommA 2021): 12. Jahreskolloquium, 18.11.2021 : in Verbindung mit dem Industrial Radio Day, 17.11.2021 : Tagungsband (ISBN 978-3-948749-10-1), (2021)
DOI: https://doi.org/10.25673/39592
Fießer, Sven; Schwalbe, Ulf:
Automated PCB parasitics extraction from EDA tools for power electronics design support
#!ilm_mods_00009397!#
In: PCIM Europe Digital Days 2021: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management : 3-7 May 2021 (ISBN 978-3-8007-5515-8), (2021), pp. 1608–1613
URL: https://ieeexplore.ieee.org/document/9472438
Hartwig, Raphael; Hensler, Alexander; Ellinger, Thomas:
Transient behavior of an 800 kHz 9-level single-phase flying capacitor GaN multilevel inverter
#!ilm_mods_00009399!#
In: PCIM Europe Digital Days 2021: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management : 3-7 May 2021 (ISBN 978-3-8007-5515-8), (2021), pp. 464–471
URL: https://ieeexplore.ieee.org/document/9472284
Hartwig, Raphael; Hensler, Alexander; Ellinger, Thomas; Primas, Carina:
Reduced parasitics leading to a 99.2 % efficient single-phase nine-level inverter at a switching frequency of 800 kHz
#!ilm_mods_00009412!#
In: APEC 2021: Thirty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition : June 14-17, 2021, virtual conference + exposition (ISBN 978-1-7281-8950-5), (2021), pp. 809–816
DOI: https://doi.org/10.1109/APEC42165.2021.9487281
Hartwig, Raphael; Hensler, Alexander; Ellinger, Thomas:
EMI filter for a three-phase 800 kHz nine-level flying capacitor GaN multilevel inverter
#!ilm_mods_00008906!#
In: 2021 23rd European Conference on Power Electronics and Applications (EPE′21 ECCE Europe): 6-10 Sept. 2021 (ISBN 978-1-6654-3384-6), (2021), p. P.1–P.10
DOI: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570600
Fießer, Sven; Schwalbe, Ulf:
Analyzing and optimizing the switching behavior of power electronics by automated PCB parasitics extraction of the critical path
#!ilm_mods_00008916!#
In: 2021 23rd European Conference on Power Electronics and Applications (EPE′21 ECCE Europe): 6-10 Sept. 2021 (ISBN 978-1-6654-3384-6), (2021), p. P.1–P.8
DOI: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570455
Xie, Jun; Henneberg, Dustin; Suberski, Martin; Rädel, Uwe; Petzoldt, Jürgen:
Analysis and implementation of a novel four-step commutation method for direct matrix converters based on FPGA and DSP
#!ilm_mods_00008915!#
In: 2021 23rd European Conference on Power Electronics and Applications (EPE′21 ECCE Europe): 6-10 Sept. 2021 (ISBN 978-1-6654-3384-6), (2021), p. P.1–P.9
DOI: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570664
Gui, Qiuye; Fehr, Hendrik; Gensior, Albrecht:
Energy-balancing of a Modular Multilevel Converter with pulsed DC load using an online trajectory planning algorithm
#!ilm_mods_00008917!#
In: 2021 23rd European Conference on Power Electronics and Applications (EPE′21 ECCE Europe): 6-10 Sept. 2021 (ISBN 978-1-6654-3384-6), (2021), p. P.1–P.10
DOI: https://doi.org/10.23919/EPE21ECCEEurope50061.2021.9570671
Schmitt, Maximilian:
Aktive Dämpfung von Gleichtaktstörungen in elektrischen Antriebssystemen
#!ilm_mods_00005500!#
Ilmenau : Universitätsbibliothek Ilmenau, 2020
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2020000067
Smirnov, Pavel:
Analyse und Synthese von Konzepten für hybride leistungselektronische Erdschlusskompensatoren für Mittelspannungsnetze
#!ilm_mods_00005465!#
Ilmenau : Universitätsbibliothek Ilmenau, 2020
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2020000510
Hartwig, Raphael; Hensler, Alexander; Ellinger, Thomas:
Volume and efficiency optimization of an industrial flying capacitor GaN multilevel inverter
#!ilm_mods_00010523!#
In: PCIM Europe: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 07.-08.07.2020 : proceedings (ISBN 978-3-8007-5245-4), (2020), pp. 1031–1035
Freiburger, Philipp:
Erstellung, Kopplung und Anwendung dynamischer thermischer Kompaktmodelle leistungselektronischer Systeme
#!ilm_mods_00011296!#
Ilmenau, 2020
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2019000626
Nos, Oleg V.; Brovanov, Sergey V.; Kharitonov, Sergey A.; Smirnov, Pavel; Abramushkina, Ekaterina E.:
The capacitor voltage balancing of cascaded H-bridge multilevel inverter
#!ilm_mods_00016452!#
In: Proceedings, 2019 IEEE International Conference on Mechatronics (ICM): Humboldt Building, TU Ilmenau, Ilmenau, Germany, 18-20 March, 2019 (ISBN 978-1-5386-6960-0), (2019), pp. 327–331
[2019 IEEE International Conference on Mechatronics, ICM 2019]
DOI: https://doi.org/10.1109/ICMECH.2019.8722835
Smirnov, Pavel; Petzoldt, Jürgen; Möbes, Sebastian:
Control of a three-phase series resonant converter based solid state transformer
#!ilm_mods_00016944!#
In: 2019 21st European Conference on Power Electronics and Applications (EPE ’19 ECCE Europe) (ISBN 978-90-75815-31-3), (2019), art. 8915432
DOI: https://doi.org/10.23919/EPE.2019.8915432
Smirnov, Pavel; Ellinger, Thomas; Kharitonov, Sergey:
Compensation of the high-frequency ground fault current components in medium voltage grids
#!ilm_mods_00016945!#
In: 2019 21st European Conference on Power Electronics and Applications (EPE ’19 ECCE Europe) (ISBN 978-90-75815-31-3), (2019), art. 8915047
DOI: https://doi.org/10.23919/EPE.2019.8915047
Hamouda, Noureddine; Babes, Badreddine; Kahla, Sami; Soufi, Youcef; Petzoldt, Jürgen; Ellinger, Thomas:
Predictive control of a grid connected PV system incorporating active power filter functionalities
#!ilm_mods_00017049!#
In: 2019 1st International Conference on Sustainable Renewable Energy Systems and Applications (ICSRESA): Tébessa, Algeria, 04 to 05 December 2019 (ISBN 978-1-72815-356-8), (2019), art. 9182655
DOI: https://doi.org/10.1109/ICSRESA49121.2019.9182655
Smirnov, Pavel; Ellinger, Thomas; Kharitonov, Sergey:
Active earth fault current compensation in medium voltage grids
#!ilm_mods_00017064!#
In: 2019 20th International Conference of Young Specialists on Micro/Nanotechnologies and Electron Devices : Erlagol, Altai Republic, 29 June-3 July, 2019 (ISBN 978-1-72811-753-9), (2019), pp. 565–570
DOI: https://doi.org/10.1109/EDM.2019.8823239
Albayrak, Sahin; Bretschneider, Peter; El Sayed, Nadim; Freund, Daniel; Hühn, Thomas [et al.]:
Robuste Steuerung- und Regelung von Verteilernetzen mit hohem Anteil regelfähiger Erzeuger und Lasten mit dem Ansatz Flexible AC Distribution Systems (FACDS) - VEREDELE: Abschlussbericht : Laufzeit: 01.08.2015-31.12.2018
#!ilm_mods_00011483!#
[Ilmenau] : Fraunhofer IOSB-AST, 2019
DOI: https://doi.org/10.2314/KXP:1680890948
Rosenbaum, Tobias:
Realisierung einer dynamischen Oberschwingungskompensation für industrielle Schweißprozesse
#!ilm_mods_00011550!#
Ilmenau, 2019
Scherf, Marko:
Auswirkung der Spannungsreserve und Frequenzwahl auf die Verlustleistung und Baugröße der magnetischen Bauelemente in Flusswandler-Topologien
#!ilm_mods_00015829!#
Ilmenau : ISLE, 2018. - ISBN 978-3-938843-91-8
Endres, Julian:
Hochdynamischer Stromrichter in Hybridstruktur
#!ilm_mods_00016144!#
Ilmenau : Universitätsbibliothek Ilmenau, 2018
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2018000203
Gelmroth, Philipp; Leu, Carsten; Möbes, Sebastian; Petzoldt, Jürgen:
Ein neuartiges Isolationskonzept eines induktiven Mittelfrequenztransformators für Solid State Transformer-Anwendungen
#!ilm_mods_00018327!#
In: VDE-Hochspannungstechnik: 12.-14. November 2018 in Berlin (ISBN 978-3-8007-4807-5), (2018), pp. 221–225
Reinhold, Andreas:
Theoretische Untersuchung und Simulation einer aktiven Filteranlage mit parallel-serieller Struktur für sechspulsige Diodengleichrichter
#!ilm_mods_00016078!#
Ilmenau : Universitätsbibliothek Ilmenau, 2018
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2017000644
Dudin, Andrey:
Analyse und Minimierung der Verluste im modularen Multilevelumrichter
#!ilm_mods_00016147!#
Ilmenau : Universitätsbibliothek Ilmenau, 2018
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2018000252
Hamouda, Noureddine; Benalla, Hocine; Hemsas, Kameleddine; Babes, Badreddine; Petzoldt, Jürgen; Ellinger, Thomas; Hamouda, Cherif:
Type-2 fuzzy logic predictive control of a grid connected wind power systems with integrated active power filter capabilities
#!ilm_mods_00016833!#
In: Journal of power electronics: JPE, vol. 17 (2017), no. 6, pp. 1587–1599
DOI: https://doi.org/10.6113/JPE.2017.17.6.1587
Wystup, Ralph:
Dynamische Feldschwächung bei am einphasigen Netz betriebenen EC-Motoren mit schlankem Zwischenkreis
#!ilm_mods_00019244!#
Ilmenau : Universitätsbibliothek Ilmenau, 2017
URL: https://nbn-resolving.org/urn:nbn:de:gbv:ilm1-2017000461
Dang, Pengpai; Ellinger, Thomas; Petzoldt, Jürgen:
Dynamic interaction analysis of APF systems
#!ilm_mods_00002840!#
In: IEEE transactions on industrial electronics: a publication of the IEEE Industrial Electronics Society, vol. 61 (2014), no. 9, pp. 4467–4473
DOI: https://doi.org/10.1109/TIE.2013.2289896
Szeponik, Sven:
Strombidirektionaler DC/DC-Steller mit induktivem Übertrager
#!ilm_mods_00019324!#
1998
Krümmer, Robert; Konrad, Sven; Petzoldt, Jürgen; Lorenz, Leo:
Thermal investigations to the structure and the use of power modules
#!ilm_mods_00019322!#
In: Official proceedings of the Thirty-Seventh [d.i. Thirty-Eighth] International Power Conversion Conference: May 26 - 28, 1998, Nürnberg, Germany (ISBN 3-928643-18-5), (1998), pp. 445–453
