Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that C maintains its standards for the high quality of its published papers. Thanks to the cooperation of our reviewers, in 2020, the median time to first decision was 13 days and the median time to publication was 35 days. The editors would like to express their sincere gratitude to the following reviewers for their precious time and dedication, regardless of whether the papers were finally published:
| A., Plyushch | Lee, Ilkeun |
| Aga, Omer | Lee, Wonhee |
| Alberto, Vertova | Lee, Young-Chul |
| Alvarez-Merino, Miguel Angel | Levesque, Dominique |
| Álvaro, Caballero | Lim, Dong Chan |
| Andreoli, Enrico | Lissorgues, Gaelle |
| Ang, Yee Sin | Lloret, Fernando |
| Arandiyan, Hamidreza | Llosa Tanco, Margot A. |
| Ariga, Katsuhiko | Loescher, Henry |
| Aschilean, Ioan | Longhi, Mariangela |
| Ashourirad, Babak | Longo, Angela |
| Ataide, Janaína Artem | López-Lorente, Ángela Inmaculada |
| Bajales, Noelia | Lorandi, Francesca |
| Bansode, Atul | Lu, Jingyu |
| Bao, Weizhai | Majewski, Jacek A. |
| Bao, Yi | Malhotra, Deepika |
| Bartoli, Mattia | Marchese, Marco |
| Bassano, Claudia | Marino, Bruno |
| Bechelany, Mikhael | Martinelli, Michela |
| Bellucci, Stefano | Martínez-Periñán, Emiliano |
| Benedic, Fabien | Matanovic, Ivana |
| Bermejo, M. Dolores | Medyńska-Juraszek, Agnieszka |
| Beszédes, Sándor | Melin, Frederic |
| Bimbela, Fernando | Mena, Ismael F. |
| Blacha-Grzechnik, Agata | Meskinis, Sarunas |
| Bouhamed, Ayda | Morgan, David |
| Burger, Michael C | Moyseowicz, Adam |
| Cabaj, Joanna | Myongwon Lee, Lucia |
| Calvo, Luisa | Nair, Mahesh |
| Camélia, Matei Ghimbeu | Naito, Katsuyuki |
| Cammarata, Antonio | Nautiyal, Amit |
| Cao, Jianyun | Nemnes, George Alexandru |
| Cazorla-Amorós, Diego | Nie, Chuanxiong |
| Cazzanelli, Massimo | Nielsen, Vance Girard |
| Cecilia, Hodur | Nitsos, Christos K. |
| Cecone, Claudio | Ola, Oluwafunmilola |
| Centeno, Miguel Angel | Palella, Alessandra |
| Ceran, Bartosz | Palo, Emma |
| Cesano, Federico | Pant, Bishweshwar |
| Chen, Houyang | Pasinszki, Tibor |
| Cheraghian, Goshtasp | Pelicano, Christian Mark |
| Chernozatonskii, Leonid A. | Pereira, Adelino |
| Cho, Jung Sang | Polanski, Marek |
| Chukov, Dilyus | Politano, Grazia Giuseppina |
| Ciszewski, Mateusz | Popov, Maxim N. |
| Czujko, Tomasz | Radtke, Aleksandra |
| Danso-Boateng, Eric | Radulescu, Aurel |
| Dato, Albert | Rahimi, Mohammad |
| Datta, Rahul | Ray, Supriyo |
| De Luca, Pierantonio | Rebholz, Claus |
| Deng, Renhua | Regulska, Elzbieta |
| Derry, Paul | Reshetnyak, Victor |
| Dettlaff, Anna | Restivo, João |
| Dhaliwal, Gurjot S. | Richtera, Lukas |
| Dimitratos, Nikolaos | Robles, Eduardo |
| Dzikuć, Maria | Rogala, Andrzej |
| Elmouwahidi, Abdelhakim | Rovira, Pere |
| Endrodi, Balazs | Rozzi, Elena |
| Fabisiak, Kazimierz | Ruocco, Concetta |
| Fedel, Mariangela | Ruuskanen, Vesa |
| Ficek, Mateusz | Salahub, Dennis |
| Florio, Ciro | San Fabian, Emilio |
| Flox, Cristina | Scheibe, Błażej |
| Friák, Martin | Schuster, Bernhard |
| Gadipelli, Srinivas | Schweiss, Ruediger |
| Gao, Zhe | Semaltianos, Nikolaos G. |
| Garbovskiy, Yuriy | Serrano, Aida |
| Gauden, Piotr | Sharma, Shiv K. |
| Gavrilov, Nemanja | Sher, Farooq |
| Gentile, Marialuisa | Shinde, Surendra Krushna |
| Ghosh, Subrata | Shrestha, Lok |
| Giuliano, Aristide | Simonpietro, Agnello |
| Glukhova, Olga E. | Singh, Gurwinder |
| Gnyba, Marcin | Solano, Francisco |
| Golub, Igor | Song , Kenan |
| Gorkunov, Maxim V. | Speranza, Giorgio |
| Goswami, Sumita | Stoof, HTC |
| Grekov, Denys | Strąkowska, Anna |
| Guerrero-Pérez, M. Olga | Strozzi, Matteo |
| Guzman, Marcelo | Stylianakis, Minas |
| Habuda-Stanic, Mirna | Su, Chie-Shaan |
| Hampton, Michael | Sysoev, Vitalii I. |
| Handoko, Albertus | Szałowski, Karol |
| Haniu, Hisao | Szekely, Gyorgy |
| Haque, Ariful | Szybowicz, Miroslaw |
| Harja, Maria | Takada, Tomoya |
| Harris, Peter | Tang, Longteng |
| Hayashi, Noriko | Torres, Daniel |
| Hayashi, Takuya | Trefon-Radziejewska, Dominika |
| Hernández Saz, Jesús | Trindle, Carl |
| Herranz, Maria Angeles | Trinh, Minh Chien |
| Hiete, Michael | Trovarelli, Alessandro |
| Hinman, Samuel | Trusso Sfrazzetto, Giuseppe |
| Hu, John | Ullrich, Carsten |
| Inaba, Masafumi | Vacacelagomez, Cristianisaac |
| Jan Laskowski, Łukasz | Valero-Romero, María José |
| Janas, Dawid | Vicente, Yolanda Sánchez |
| Jin, Kyoungsuk | Voutsas, Epaminondas |
| Kanda, Kazuhiro | Wang, Fenjuan |
| Kelarakis, Antonios | Wang, Gang |
| Kepinska, Marta | Wang, Xianyou |
| Kogan, Eugene | Wei, Zhu |
| Konyashin, Igor | Wieczorek, Władysław G. |
| Kopel, Pavel | Wiśniewski, Marek |
| Korznikova, Elena | Włoch, Marcin |
| Kothandaraman, Jotheeswari | Xia, Guanglin |
| Kraka, Elfi | Xiao, Xin |
| Kratochvilova, Irena | Xin, Hai |
| Krzywiecki, Maciej | Xiong, Hui |
| Kumar, Harish | Xu, Tao |
| Kumar, Vivek | Yang, Euntae |
| Kuś, Wacław | Yang, Ju-chan |
| Kusters, Ilja | Yoshida, Kentaro |
| La, Duc Duong | Zaffora, Andrea |
| Lamouroux, Emmanuel | Zhang, Xiaoyan |
| Lavagna, Luca | Zhao, Xinxin (Cindy) |
| Le Normand, Francois | Zhu, Xiaolong |
| LeBlanc, Roger M | Zieliński, Andrzej |
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