The editorial team greatly appreciates the reviewers who have dedicated their considerable time and expertise to the journal’s rigorous editorial process over the past 12 months, regardless of whether the papers are finally published or not. In 2019, a total of 111 papers were published in the journal, with a median time to first decision of 17 days and a median time from submission to publication of 44 days. The editors would like to express their sincere gratitude to the following reviewers for their generous contribution in 2019:
| Abdelsalam, Sara | Marcinauskas, Liutauras |
| Abellan-Nebot, Jose Vicente | Marek, Antonin |
| Adams, Mike | Martinez-Martinez, Diego |
| Aghababaei, Ramin | Martins, Ramiro |
| Alfredsson, Bo | Maru, Marcia M. |
| Amanov, Auezhan | Massi, Francesco |
| Antoszewski, Bogdan | Matijevic, Bozidar |
| Argatov, Ivan | Mermertas, Ümit |
| Arghir, Mihaï | Minami, Ichiro |
| Arias-Pardilla, Joaquín | Miró, Guillermo |
| Avilés, M.D. | Mohammed, Abdul Sanad |
| Bailey, Richard | Molter, Jürgen |
| Balakrishnan, Sashi | Morris, Nicholas John |
| Balitskii, Alexander | Mróz, Zenon |
| Bełdowski, Piotr | Müller, Michael |
| Belin, Michel | Mutyala, Kalyan |
| Besser, Charlotte | Nadolny, Krzysztof |
| Bhowmick, Sukanta | Nevshupa, Roman A |
| Björling, Marcus | Nieto, Andy |
| Bonilla, Mauricio | Nikolakopoulos, Pantelis G. |
| Borchers, Dr. Christine | Nosko, Oleksii |
| Borodich, Feodor M. | Oday Ibraheem, Abdullah |
| Brostow, Witold | Offner, Günter |
| Cabaleiro, David | Olaru, Dumitru |
| Cabboi, Alessandro | Ono, Kyosuke |
| Cai, Feng | Ortega, Javier |
| Cai, Meirong | Ozaki, Shingo |
| Camelia, Gabor | Palasantzas, George |
| Campos, Armando | Paleu, Viorel |
| Caputi, Lorenzo S. | Pamies, Ramon |
| Caramia, Giovanni | Panda, Anton |
| Caterina, Gaudiuso | Paolicelli, Guido |
| Chao, Jesus | Papageorgiou, George Z. |
| Chatterton, Steven | Papangelo, Antonio |
| Chen, Zhe | Pawlus, Paweł |
| Cho, Dae-Hyun | Peña-Parás, Laura |
| Circu, Viorel | Persson, Bo |
| Coelho, Luís | Petelska, Aneta |
| Cousseau, Tiago | Piasecki, Adam |
| Cretu, Spiridon | Podgursky, Vitali |
| Ctvrtlik, Radim | Polozov, Igor |
| DÁmato, Roberto | Pougoum, Fabrice |
| Descartes, Sylvie | Psyllaki, P. |
| Dhunput, Ashvin | Rahman Rashid, Rizwan Abdul |
| Dixon, David A. | Rahnejat, Homer |
| Dmitriev, Andrey | Razavykia, Abbas |
| Dohnal, Fadi | Rebollar, Esther |
| Dolatabadi, Nader | Rezaei Rad, Aryan |
| Dwyer-Joyce, Rob | Rosa, Pedro |
| Dyk, Stepan | Rosenkranz, Andreas |
| Egberts, Philip | Rowe, Brian |
| Elkaseer, Ahmed | Rowthu, Sriharitha |
| Fang, Shiqi | Roy, Sougata |
| Faraguna, Fabio | Ruggiero, Alessandro |
| Farfan-Cabrera, Leonardo | Rung, Stefan |
| Fernandes, Carlos M.C.G. | Ruths, Marina |
| Filip, Peter | Sakon, Takuo |
| Filippov, Andrey | Sander, David E. |
| Fine, James Burke | Saravanan, Prabakaran |
| Gan, Min | Sbordone, Ludovico |
| Gao, Wenjun | Scheichl, Bernhard |
| García Diez, Ana | Schmidt, Tannin |
| Georgiev, Georgi As. | Schneider, Yanling |
| Ghidelli, Matteo | Schulze, Kyle |
| Gillot, Frédéric | Schwarze, Hubert |
| Gonçalves, David | Senatore, Adolfo |
| Goryacheva, Irina G. | Senetakis, Konstantinos |
| Gough, Julia | Serro, A.P. |
| Grilec, Kresimir | Shang, Lizhi |
| Grizzuti, Nino | Sharif, K. J.H. |
| Grün, Florian | Shyu, Shiuh-Hwa |
| Guglielmino, Eugenio | Siczek, Krzysztof |
| Guida, Domenico | Šimek, Jiří |
| Gupta, Surojit | Singh, Harpal |
| H. Müser, Prof. Dr. Martin | Singh, Manjesh Kumar |
| Hagemann, Thomas | Singh, Subhash |
| Hajžman, Michal | Sinou, Jean-Jacques |
| He, Xin | Sivakumar, Poopalasingam |
| Hegab, Hussien | Smith, Edward. H. |
| Heise, Rainer | Soin, Navneet |
| Hendrick, Patrick | Solitro, Giovanni |
| Ho, Jang | Soltanahmadi, Siavash |
| Homayoun, Mohammad-Reza | Song, Shaopin |
| Horovistiz, Ana | Sperber, GH |
| Hsu, Cheng-Hsun | Sperka, Petr |
| Huang, Yuli | Stender, Merten |
| Ispas, Adriana | Streator, Jeffrey |
| Janicki, Damian | Sun, Yong |
| Jia, Yu | Suo, Shuangfu |
| Jing, Yu | Surzhenkov, Andrei |
| Johnson, David | Syrakos, Alexandros |
| Jolly, Pascal | Szeleszczuk, Łukasz |
| Kadiric, Amir | Szewczyk, Roman |
| Kailer, Andreas | Taha-Tijerina, Jaime |
| Kalligeros, Stamatis Spyridon | Takahashi, Shun |
| Kang, Jaeyoung | Tarasov, Sergei Yu |
| Kawada, Shouhei | Tavanti, Francesco |
| Khani, Shaghayegh | Tonazzi, Davide |
| Khanna, Rohit | Tosatti, Samuele G. P. |
| Khatri, Om P | Tripathi, Manoj |
| Kim, Dae Eun | Tsoi, James Kit-hon |
| Kim, Wonho | Umehara, Noritsugu |
| Klit, Peder | Varga, Markus |
| Klonos, Panagiotis | Vazquez Martinez, Juan Manuel |
| Koplin, Christof | Velkavrh, Igor |
| Koutsovasilis, Panagiotis | Viáfara, Cristian C. |
| Kovalchenko, Andrii M. | Vidal, Catarina |
| Ksiazek, Marzanna | Vilhena, Luís |
| Kwiatkowski, Konrad | Visco, Annamaria |
| Kwon, Soon-Hong | Volpe, Annalisa |
| Lai, Ta-Hua | Wagner, Christian |
| Lanza, Antonio | Walvekar, Aditya A. |
| Larsson, Per-Lennart | Wan, Yong |
| Larsson, Roland | Wang, Bing |
| Lavella, Mario | Wasilczuk, Michał |
| Le, Qichi | Wieleba, Wojciech |
| Lee, Hung Bin | Wodtke, Michal |
| Lee, Shyi-Long | Woloszynski, Tomasz |
| Lemu, Hirpa G. | Wong, Patrick |
| Lepicka, Magdalena | Wong, Victor |
| Lewis, Roger | Woodhouse, Jim |
| Lhermerout, Romain | Woschke, Elmar |
| Li, Jiusheng | Woydt, Mathias |
| Li, Ying | Wu, Hui |
| Lin, Weifeng | Xiao, Shaoping |
| Lin, Yuankun | Xu, Rongguang |
| Linsler, Dominic | Yahiaoui, Malik |
| Lizundia, Erlantz | Yu, Guojun |
| Lohmus, Rynno | Zabala, Alaitz |
| Lohner, Thomas | Zadorozhnaya, Elena |
| López de Lacalle, Luis Norberto | Zampieri, Nicolò |
| Lostado, Rubén | Zavos, Anastasios |
| Lü, Yanjun | Zekonyte, Jurgita |
| Luboš, Smolík | Zhang, Chen |
| Lugt, Piet | Zhang, Hui |
| Luo, Jianbin | Zhang, Laichang |
| Luo, Quanshun | Zhang, Meng |
| Machado, Tiago Henrique | Zhang, Sung-Uk |
| Makhovskaya, Yulia | Zheng, Qiye |
| Maldonado-Cortes, Demófilo | Zhmud, Boris |
| Malucelli, Giulio | Zidanšek, Aleksander |
| Mano, Hiroki | Zmarzły, Paweł |
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