Peer review is the driving force of journal development, and reviewers are gatekeepers who ensure that Signals 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 27.5 days and the median time to publication was 101 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:
| Ahsani, Vesal | Leon-Gonzalez, Roberto |
| Alshazly, Hammam | Lim, Gilbert |
| Ansari, Kutubuddin | Lin, Bor-Shing |
| Arandjelović, Ognjen | Liu, Lu |
| Arrebola, Manuel | Liu, Shuaiqi |
| Aydemir, Nihan | Lora-Rivera, Raúl |
| Aziz, Fayeem | Makar, Artur |
| Barmada, Sami | Markušić, Snježana |
| Belay, Birhanu | Marolt, Matija |
| Bertocci, Francesco | Moffat, David |
| Bhandari, Manohar Prasad | Moroni, Davide |
| Blanco, Justin A. | Nahid, Abdullah-Al |
| Boubchir, Larbi | Namazi, Hamidreza |
| Catalin, Dumitrescu | Nguyen, Van Dung |
| Chung, Kuo-liang | Nitta, Naotaka |
| Damaševičius, Robertas | Obland, Michael |
| Dănisor, Cosmin | Paccagnini, Alessia |
| Darsena, Donatella | Pires, Ivan Miguel Serrano |
| Dhimish, Mahmoud | Povstenko, Yuriy |
| Diraco, Giovanni | Prokop, Miloš |
| Dreglea, Aliona Ivanovna | Pujol, Francisco A. |
| Dulebenets, Maxim A. | Punchihewa, Amal |
| Estêvão, João M. C. | Qi, Guanqiu |
| Farago, Paul | Rana, Abu Ul Hassan Sarwar |
| Flandrin, Patrick | Rhee, Eun Joo |
| Fleer, Sascha | Ryzhii, Maxim V. |
| Foumani, Mehdi | Sakpere, Wilson |
| Garcia, Jose Manuel Cano | Semenov, Andriy |
| Garcia-Yeguas, Ara Celi | Serradilla, Francisco |
| Ghosal, Sambuddha | Sevil, Mert |
| Giannakakis, Giorgos | Shah, Vrutangkumar V |
| Golyandina, Nina | Shevgunov, Timofey |
| González De La Rosa, Juan-José | Shieh, Wann-Yun |
| Guaragnella, Cataldo | Silvester, Debbie S. |
| Guida, Carmen | Sraml, Matjaz |
| Huynh, Thanh-Canh | Štajduhar, Ivan |
| Iordanescu, Sergiu | Stavroulakis, Georgios E. |
| Islam, M M Manjurul | Stoyanov, Borislav |
| Islam, Md Rabiul | Su, Xiaojun |
| Iudice, Ivan | Suzuki, Wataru |
| Jagodzinski, Filip | Svelto, Cesare |
| Jensen, Mark J. | Syafrudin, Muhammad |
| Kaplun, Dmitrii | Szczepanek, Joanna |
| Khosravy, Mahdi | Tangherloni, Andrea |
| Kim, Jonghwa | Tanskanen, Jarno M. A. |
| Kim, Tae-Hyong | Tian, Zhenhua |
| Kleiven, Andreas | Tigrini, Andrea |
| Kodali, Maheedhar | Tiwari, Arjun Prasad |
| Kolev, Mikhail | Tran, Binh Q. |
| Korobeynikov, Anton | Valero-Mas, Jose J. |
| Kotov, Sergey | Veltkamp, Remco |
| Krasteva, Vessela | Wang, Xuezhi |
| Krishnan, Sri | Wójcik, Grzegorz Marcin |
| Kromanis, Rolands | Wu, Chensheng |
| La Foresta, Fabio | Yeom, Seokwon |
| Lashin, Sergey | Yoon, Hyungchul (Henry) |
| Lee, Yiu Yin Raymond | Zampogna, Alessandro |
| Lefik, Marek | Ždímalová, Mária |
Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations. |
© 2021 by the author. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).