Acknowledgment to Reviewers of Systems in 2021

Rigorous peer-reviews are the basis of high-quality academic publishing. Thanks to the great efforts of our reviewers, Systems was able to maintain its standards for the high quality of its published papers. Thanks to the contribution of our reviewers, in 2021, the median time to first decision was 16 days and the median time to publication was 44 days. The editors would like to extend their gratitude and recognition to the following reviewers for their precious time and dedication, regardless of whether the papers they reviewed were finally published:

Adrian Korodi	Liang-Bi Chen
Adrian Tantau	Lingbo Liu
Agata Mesjasz-Lech	Livia Anastasiu
Ahmad Ali	Long Wang
Aijun Liu	Ludovic Apvrille
Alejandro Padilla-Rivera	Luis Matosas-López
Alejandro Salado	Luitzen De Boer
Aleksander Buczacki	Maider Aldaz
Alessandro Giuliani	Manuel García García
Alfredo Coelho	Manuel Pabón-Carrasco
Ali Reza Yarahmadi Bafghi	Manuela Ingaldi
Amir Mahdiyar	Marcel Pikhart
Ana Cristina Sayuri Tanaka	Marco Cucchi
Ana Simaens	Marcos Pereira Estellita Lins
Anca Sipos	Mare Koit
Andrea Mariscotti	María Del Mar Fernández Martínez
Andreas Größler	Maria Francesca Milazzo
Andrzej Bielecki	Maria L. Manca
Andy Lane	Mariana Petrova
Angelo A. Camillo	Mario Fargnoli
Anita Mirjamdotter	Mariusz Kostrzewski
Anna Maroušková	Martin Schaffernicht
Antonio M. Perez-Flores	Martina Tomičić Furjan
Antonio Seijas-Macias	Massimo Panarotto
Carlo Drago	Maurice Yolles
Carlos E. Galván-Tejada	Meng Li
Carlos Mestanza-Ramón	Michael C. Smith
Carsten Hoyer-Klick	Michael R. Lissack
Chang Seop Rhee	Michael Riedl
Charilaos Latinopoulos	Michael Winokur
Chiara Magliaro	Miguel Martínez García
Chin-Feng Lin	Mihai Caramihai
Chris Fields	Mikko Kolehmainen
Christian Neureiter	Mindaugas Butkus
Colette Rolland	Mirjana Pejic Bach
Corinthias P. M. Sianipar	Mitsuru Kodama
Črtomir Rozman	Moinak Maiti
Cuauhtémoc Sanchez Ramírez	Molina Andrés
Dan-Cristian Dabija	Monika Ratajczak
Daniel R. Herber	Muhammad Tahir
Darja Kubečková	Narasimha Paravastu
David Louis Olson	Niamat Hossain
David Weinbaum	Nicola Montemurro
Didier Gourc	Nikos Panopoulos
Dinh Van Nam	Nirit Gavish
Dmitry Mikhailovich Nazarov	Oleguer Camerino
Donghoon Kim	Olga Jensen
Dunwen Wei	Oliver Cuate
Eder Mateus Nunes Gonçalves	Ondrej Krejcar
Édson Luis Bolfe	Pal Varga
Edward J. Garrity	Panagiotis Trivellas
Edwin Ordoukhanian	Parvaiz Ahmad Naik
Elias August	Paul Blazey
Elżbieta Bombik	Pavel Foltin
Elżbieta Ryńska	Pavel Praks
Emiliya Suprun	Payuna Uday
Eric Specking	Pedro Aceituno-Aceituno
Fani Antoniou	Peter Bican
Farooq Sher	Peter Weiss
Flavio Cirillo	Philippe J. Giabbanelli
Francesca Davoli	Ping Zhao
Francisco Alvarez Rodríguez	Piotr Korbel
Franco Bagnoli	Piotr Pałka
Frank Lefley	Piotr Staszkiewicz
Franz L. Dickert	Polinpapilinho Katina
Gabrijela Popovic	Punit Gandhi
Gaetano Chinnici	Qazi Mohammad Sajid Jamal
Garry Sotnik	Quynh Thi Tu Tran
Gavriil George Arsoniadis	Rajaguru Vasuki
Gayathri Devi Rajmohan	Ranjit Kaur
George Hloupis	Rea Lavi
Georgios Tsaramirsis	Ricardo Martínez-Cañas
Gerardo Febres	Richard Bibb
Giancarlo Sperlì	Robert Cavana
Giner Alor-Hernández	Rolando Flores-Carapia
Giovanni Biondi	Roman Dumitrescu
Giulio Di Gravio	Ron Hirschprung
Giuseppe Fileccia Scimemi	Ronald Edward Giachetti
Giuseppe Loprencipe	Russell Richards
Giusppe Attanasi	Sabina Hodžić
Graeme Nicholas	Sabine Berteina-Raboin
Gregory S. Parnell	Sameera Mubarak
Gregory Zacharewicz	Samundra Regmi
Grzegorz Kinelski	Sandro Schlindwein
Grzegorz Michalski	Sang Soo Kim
Guillermo Ronquillo Lomelí	Sang-Joon Kim
Gustavo Nagy	Santiago García
Hai Chien Pham	Santoso Wibowo
Hana Tomášková	Sarfaraz Hashemkhani Zolfani
Hanno Hildmann	Saurabh Singh
Hao Zhang	Serhii Stepenko
Harish Sundaresh	Serhiy Zabolotnyy
Heidi Davidz	Seyede Fatemeh Ghoreishi
Helbert Eduardo Espitia	Shahnawaz Muhammed
Herbert Kimura	Shahryar Sorooshian
Hitomi Sato	Sherif Abdelwahed
Huai Yu	Shiyong Li
Hua-Min Liu	Sigal Koral Kordova
Hugo Daniel Macedo	Silvan Urfer
Hye Jung Jung	Simona Catalina Stefan
Hyoung-Goo Kang	Sławomira Hajduk
Ignacio Martinez-Moyano	Stanislaw Raczynski
Isaías González Pérez	Stelios Ioannou
Ivan Ferretti	Štěpán Kavan
Iwona Bąk	Steve Dixon
Iwona Grobelna	Susana Lucas
Jacek Barcik	Svajone Bekesiene
Jamie Monat	Tadeja Jere Jakulin
Janet McIntyre	Tahamina Khanam
Jaroslaw Konior	Tammo Steenhuis
Javier Calvo-Amodio	Teodora Sanislav
Jeongsoo Yu	Teresa A. Oliveira
Jeon-Young Kang	Thaddeus Shannon
Jerome Hugues	Timothy Ferris
Jessica Riccioni	Todor Tagarev
Jessica Ventura	Tomasz M. Gwizdałła
Jifa Gu	Tomislav Martinec
Jitender Madaan	Trevor Bihl
Jizhou Tong	Ugo Bardi
Joaquim Mourato	Umberto Turrini
Joaquín Navajas	Vanessa Campos Climent
John Voyer	Vasyl Martsenyuk
Jong-Min Kim	Venkateswarlu Nalluri
José Damián Ruiz-Sinoga	Victor Murinde
Jose De Jesus Rubio	Vladimir A. Grishagin
José Pérez Ríos	Weng-Kun Liu
Josef Zelenka	William Young
Joseph E. Brenner	Williem Auping
Judith Dahmann	Xiang Zhang
Jurgita Antuchevičienė	Xiaowu Li
K. N. Kudryavtsev	Xin Wang
Karar Mahmoud	Xingwei Li
Karel Mls	Yang Liu
Kari Lippert	Yang Zhang
Katarina Zvarikova	Yaniv Mordecai
Katarzyna Lawinska	Yilun Shang
Kazuto Sasai	Yinpeng Li
Khalid Saeed	Yiwei Wang
Koki Arai	Yongchuan Tang
Krzysztof Grygierek	Yoram Reich
Kun-Li Wen	Youssef A. Attia
Larisa Ivascu	Yun-Bae Kim
Lazaros Moysis	Yunus Egi
Leise Kelli De Oliveira	Yu-Qing Wang