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 258 papers were published in the journal, with a median time to first decision of 16 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:
| Aalsalem, Mohammed | Listanti, Marco |
| Abbod, Maysam | Liu, Fangming |
| Abd-Alhameed, Raed | Liu, Jing |
| Abdalzaher, Mohamed S. | Liu, Shijun |
| Acharya, H.B. | Liu, Xin |
| Admiraal, Wilfried | Liu, Xingpeng |
| Agarwal, Rachit | Liu, Ye |
| Agustí, Anna | Liu, Zhiping |
| Ahmad, Tanveer | Liu, Zilong |
| Ahmed, Syed Hassan | Livieris, Ioannis E. |
| Akabane, Ademar T. | Lloret, Jaime |
| Al-Ali, Abdulrahman | Loreti, Pierpaolo |
| Alasali, Feras | Lorincz, Josip |
| Alcaide, Juan Ignacio | Lu, Rongxing |
| Aldaya, Ivan | Lu, Xiaofeng |
| Aleskerov, Fuad | Luján-Mora, Sergio |
| Alexandropoulos, George | Luo, Jun |
| Al-Gumaei, Yousef | Maggiori, Emmanuel |
| Ali, G. G. Md. Nawaz | Makris, Christos |
| Ali, Rashid | Mamageishvili, Akaki |
| Almeida, Thiago | Mancini, Simone |
| Aloqaily, Moayad | Maragkoudakis, Manolis |
| Alor-Hernández, Giner | Marappan, Raja |
| Alsamhi, Saeed H. | Marchesi, Michele |
| Alvares, Luis Otavio | Margheri, Andrea |
| Anagnostopoulos, Iraklis | Marinello, Francesco |
| Anagnostopoulos, Marios | Markovič, Rene |
| Anastasopoulos, Markos | Martín, Joan Navarro |
| Andersson, Karl | Martínez, Juan A. |
| Antonopoulos, Angelos | Martinez-Millana, Antonio |
| Antonopoulos, Nikos | Marzi, Claudia |
| Araújo, Allysson Allex | Mascarenhas, Dalbert Matos |
| Araujo, Alvaro | Masini, Barbara Mavi |
| Arcia-Moret, Andrés | Masini, Barbara Mavì |
| Arguelles-Cruz, Amadeo J. | Massaro, Alessandro |
| Ari, Ado Adamou Abba | Matricciani, Emilio |
| Arriola, Aitor | Mcheick, Hamid |
| Assante, Dario | Medina-Merodio, Jose Amelio |
| Atanasoae, Pavel | Meharouech, Amira |
| Atif, Yacine | Mehrabi, Abbas |
| Augé, Jordan | Mekikis, Prodromos-Vasileios |
| Avram, Camelia | Mekinda, Leonce |
| Awad, Ali Ismail | Menendez, Hector |
| Bădulescu, Daniel | Meng, Weizhi |
| Baig, Zubair | Meng, Zhaozong |
| Baioletti, Marco | Merenda, Massimo |
| Baker, Thar | Meseguer, Roc |
| Balandin, Sergey | Mezghani, Farouk |
| Balasubramanian, Venkatraman | Miani, Rodrigo Sanches |
| Bampis, Christos | Migliardi, Mauro |
| Bandari, Yashwanth Kumar | Mikhaylov, Konstantin |
| Barbon Jr, Sylvio | Mikroyannidis, Alexander |
| Barbosa, Raul | Milán-García, Juan |
| Barnett, George | Minaee, Shervin |
| Baryannis, George | Minussi, Carlos Roberto |
| Basford, Philip J. | Mišić, Jelena |
| Baumann, Felix W. | Misra, Satyajayant |
| Bazzi, Alessandro | Mitrović, Sandra |
| Beaudouin-Lafon, Michel | Mo, Lei |
| Beck, Brian M. | Mocanu, Irina Georgiana |
| Beckers, Kristian | Modoni, Gianfranco |
| Bellan, Diego | Mohammadi, Fazel |
| Bellekens, Ben | Mohorcic, Mihael |
| Belli, Laura | Monnawar, Mustafa |
| Belyi, Alexander | Moon, Hyeonjoon |
| Benkhelifa, Elhadj | Moore, Philip |
| Bentayeb, Fadila | Moreira, Alexandra |
| Beranek, Ladislav | Moscholios, Ioannis D. |
| Bernardini, Cesar | Mostafaei, Habib |
| Bertolotto, Michela | Mota, Rafael Perazzo Barbosa |
| Bestak, Robert | Munaretto, Anelise |
| Bikakis, Antonis | Muñoz-Gea, Juan Pedro |
| Blue, Levon | Muresan, Iulia Cristina |
| Blümm, Christian | Murroni, Maurizio |
| Bonnic, Vincenzo | Muthanna, Ammar |
| Borrego, Carlos | Mylonas, Phivos |
| Bouk, Safdar H. | Nakayama, Yu |
| Bouri, Elie | Namiot, Dmitry |
| Bousia, Alexandra | Nardin, Luis Gustavo |
| Brad, Remus | Nasimuddin, N. |
| Bureš, Vladimír | Nasiri, Noushin |
| Cabrera, Wellington M. | Navarro-Camba, Enrique A. |
| Callejo, Miguel Blanco | Nazarian, Shahin |
| Cambria, Erik | Nencioni, Gianfranco |
| Cammarota, Rosario | Neuman, Clifford |
| Campelo, José Carlos | Newbold, Greg |
| Canedo, Edna Dias | Nguyen, Binh |
| Caniato, Marco | Nguyen, Kien |
| Cano Garcia, Jose Manuel | Nguyen, Thien D. |
| Cao, Hung | Nguyen, Van Dung |
| Cao, Junwei | Nicolai, Garrett J |
| Capraro, Valerio | Nimma, Kutaiba Sabah |
| Carapinha, Jorge | Ning, Zhaolong |
| Carrillo de Gea, Juan Manuel | Nishi, Kazuki |
| Carutasu, George | Njilla, Laurent |
| Castiglione, Arcangelo | Nobre, Jéferson Campos |
| Cava, María-Jesús | Ntantogian, Christoforos |
| Centobelli, Piera | Nunes, Leonel |
| Cervigon, Raquel | Ochoa-Zezzatti, Alberto |
| Chamoso Santos, Pablo | Ogiela, Marek R. |
| Chang, Chih-Yung | Okada, Isamu |
| Chang, Lin-Huang | Olaru, Andrei |
| Chau, Kwok-Wing | Olasupo, Tajudeen O. |
| Chen, Bo | Oliveira, Luís |
| Chen, Chi-Hua | Ometov, Aleksandr |
| Chen, Chin-Ling | Onireti, Oluwakayode |
| Chen, Haiguang | Orciuoli, Francesco |
| Chen, Hongyang | Ortega-Sánchez, Delfín |
| Chen, Hsing-Chung | Ortegon, Jaime |
| Chen, Liang-Bi | Ortiz, Jordi |
| Chen, Tinggui | Ospina, Raydonal |
| Cheng, Chia-Hsin | Otoum, Safa |
| Chizari, Hassan | Ouarnoughi, Hamza |
| Choi, Hyoung-Kee | Ozili, Peterson K. |
| Choi, Jihwan P. | Paganelli, Federica |
| Choi, Sujin | Pagge, Jenny |
| Choraś, Ryszard | Pais, Ivana |
| Chowdhury, Dhiman | Pan, Zhaoqing |
| Christodoulou, Klitos | Panagopoulos, Athanasios |
| Christodoulou, Panayiotis | Pandey, Gaurav |
| Chui, Kwok Tai | Pankowska, Malgorzata |
| Chun, Young Jin | Papadakos, Panagiotis |
| Ciobanu, Radu Ioan | Papaioannou, Thanasis |
| Ciuonzo, Domenico | Pappas, Ilias |
| Claro, Daniela B. | Parada Medina, Raúl |
| Claudio, Savaglio | Pareschi, Remo |
| Codetta-Raiteri, Daniele | Park, Hyunggon |
| Codina, Lluís | Parrein, Benoit |
| Colace, Francesco | Parry, Dave |
| Corcoran, Peter | Parus, Arkadiusz |
| Correia, Pedro Miguel Alves Ribeiro | Parvez, Imtiaz |
| Correia, Sérgio | Pasolini, Gianni |
| Costa, Aniko | Pastor Vargas, Rafael |
| Costopoulou, Constantina | Patsakis, Constantinos |
| Cotfas, Liviu-Adrian | Pau, Giovanni |
| Coutrot, Antoine | Pavaloaia, Vasile-Daniel |
| Covaci, Alexandra | Pecorella, Tommaso |
| Craciunescu, Razvan | Pele, Daniel |
| Craus, Miticǎ | Pereira, Lucas |
| Cristina, Gaitan Nicoleta | Perikos, Isidoros |
| Crooks, Andrew | Pescini, Dario |
| Cui, Jie | Petz, Gerald |
| Curiac, Daniel-Ioan | Pires, Ivan |
| Czauderna, Tobias | Pooranian, Zahra |
| Da Silveira, Marcos | Popescu, Daniela-Elena |
| Dai, Hong-Jie | Porrini, Donatella |
| Damasevicius, Robertas | Pozzebon, Alessandro |
| Dantas, Mario A.R. | Pradhapan, Paruthi |
| Darsena, Donatella | Prasad, Mukesh |
| Dautov, Rustem | Preethichandra, Daluwathu Mulla Gamage |
| Davoli, Luca | Prieto-Guerrero, Alfonso |
| De Arruda, Henrique | Prijić, Aneta |
| De Carolis, Berardina | Privitera, Donatella |
| De Carvalho, Rogerio Atem | Puente, Santiago |
| De Castro, Alexandre | Puliafito, Antonio |
| De La Prieta Pintado, Fernando | Pulvirenti, Alfredo |
| De Meo, Pasquale | Putland, Rosalyn L. |
| De Stefano, Valerio | Qasha, Rawaa |
| Debono, Carl James | Qi, Guanqiu |
| Dechouniotis, Dimitris | Quadri, Christian |
| Delcea, Camelia | Raddo, Thiago Roberto |
| Demertzis, Konstantinos | Radulović, Aleksandra |
| Deschinkel, Karine | Raffaghelli, Juliana |
| Dessì, Danilo | Rahmati, Amir |
| Di Corso, Evelina | Ramos, Victor |
| Di Nunzio, Luca | Rascher, Daniel |
| Diaconita, Vlad | Rasolomampionona, Désiré D. |
| Dinh, Ngoc Thanh | Rasti, Pejman |
| Diraco, Giovanni | Rawassizadeh, Reza |
| Dolui, Koustabh | Reiff-Marganiec, Stephan |
| Domaszewicz, Jarosław | Reina, Daniel Gutiérrez |
| Dombek, Grzegorz | Renigier-Bilozor, Malgorzata |
| Domingues, Patricio | Rezvani, Mohsen |
| Dong, Yunquan | Richardson, Joanna |
| Dospinescu, Nicoleta | Righi, Rodrigo |
| Doulamis, Anastasios | Riguidel, Michel |
| Doulamis, Nikolaos | Risi, Michele |
| Dragomir, Mihnea | Rizun, Nina |
| Dreżewski, Rafał | Rizzardi, Alessandra |
| Duan, Qiang | Robles, Sergi |
| Dziurdzia, Piotr | Rocha, Jorge |
| Elgazzar, Khalid | Rodger, James A. |
| Elhalawany, Basem Mamdoh | Rodríguez Pérez, Miguel |
| Eliopoulos, Panagiotis A. | Rodriguez, Juan Manuel |
| Elsts, Atis | Rodriguez, Juvenal |
| Endo, Patricia | Rodríguez-García, Miguel Ángel |
| Eramo, Vincenzo | Rodríguez-Monroy, Carlos |
| Erkut, Burak | Rojas, Elisa |
| Erturk, Emre | Romero-Rodríguez, Luis Miguel |
| Esposito, Christian | Rondeel, Thomas |
| Estrada, Rebeca | Rosaci, Domenico |
| Estrada-López, Johan J. | Rossi, Ryan |
| Evans, Leighton | Ruipérez-Valiente, José A. |
| Falco, Enzo | Saadane, Rachid |
| Fan, Pingyi | Saborido, Rubén |
| Faye, Sébastien | Sabzehgar, Reza |
| Férnandez-Batanero, Jose M. | Sahu, Bharat J. R. |
| Fernández-Plaza, José Antonio | Saia, Roberto |
| Ferrero, Carlos Andrés | Saias, José |
| Ficco, Massimo | Sakamoto, Shinji |
| Figueiredo, Lino | Salah, Khaled |
| Filho, Mauro Fazion | Saldanha, Mario |
| Fletcher, Kenneth | Samuel, John |
| Flöck, Fabian | Sanchez, Victor |
| Fonseca, José | Sandoval, Leonidas |
| Fornaro, Claudio | Sanmartin, Paul |
| Förster, Anna | Santana, Jose |
| Fotia, Lidia | Santoro, Corrado |
| Friedrich, Christoph M. | Santos, José |
| Fugkeaw, Somchart | Sarhan, Saad |
| Fujisaki, Kiyotaka | Saura, José Ramón |
| Fukuda, Munehiro | Sawik, Bartosz |
| G Menon, Varun | Scatá, Marialisa |
| Gaito, Sabrina | Schuetz, Christoph G. |
| Galdames, Patricio | Sebestyen, Gheorghe |
| García Del Castillo, Alvaro | Sehgal, Rahul |
| García-Cuesta, Esteban | Seinturier, Julien |
| García-Fuentes, Miguel Á. | Senouci, Benaoumeur |
| García-Magariño, Iván | Sgora, Aggeliki |
| Gardikis, Georgios | Shafiq, Omair |
| Ge, Xiaohu | Shahidi, Reza |
| Gechter, Franck | Shaikh, Zaffar |
| Geneiatakis, Dimitris | Shamshirband, Shahab |
| Ghajargar, Maliheh | Shang, Yilun |
| Gharbaoui, Molka | Shanmugam, Bharanidharan |
| Gia, Tuan Nguyen | Sharma, Pradip |
| Giannakoulopoulos, Andreas | Sharma, Vishal |
| Giannelli, Carlo | Sheldon, Pavica |
| Giglia, Elena | Shen, Feichen |
| Glynn, Peter J | Sheridan, Lorraine |
| Godoy, Daniela | Shi, Junxiao |
| Gomede, Everton | Shi, Lei |
| González Pérez, Isaías | Shibata, Naoki |
| González., Luis C. | Shilov, Nikolay |
| González-Cabrera, Joaquín | Shiralkar, Prashant |
| González-Tablas, Ana Isabel | Siegel, Melanie |
| Gorricho, Juan-Luis | Silhavy, Petr |
| Grazia, Carlo Augusto | Silva, Dora Santos |
| Grgurić, Andrej | Silva, Edelberto Franco |
| Grobelnik, Marko | Simões, Alberto |
| Grønli, Tor-Morten | Singh, Kamal Deep |
| Grosso, Paola | Singh, Yogang |
| Groza, Bogdan | Siniscalchi, Sabato Marco |
| Gruden, Chiara | Sofia, Rute C. |
| Guarda, Teresa | Soler, Jose |
| Guarnieri, Patricia | Song, Fei |
| Guazzini, Andrea | Song, Kyoung-Young |
| Guerrero, Carlos | Soomro, Toufique Ahmed |
| Guerrero, Juan I. | Sousa, João C. |
| Guido, Giuseppe | Sperlì, Giancarlo |
| Guna, Jože | Srivastava, Gautam |
| Gunleifsen, Håkon | Steenhuis, Harm-Jan |
| Hail, Mohamed Ahmed | Stock, Wolfgang G. |
| Hakulinen, Jaakko | Stoyanov, Borislav |
| Hamidi, Reza | Strzalka, Dominik |
| Hämmäinen, Heikki | Sturiale, Luisa |
| Hammond, Tracy Anne | Suarez, Alvaro |
| Han, Chong | Suciu, George |
| Haque, Adnan Ul | Suhartono, Derwin |
| Hardt, Wolfram | Sun, Ke |
| Haßlinger, Gerhard | Sun, Xuan |
| Heiberger, Raphael | Sun, Yuqiong |
| Heo, Wookjae | Sun, Ziheng |
| Hernández-Torruco, José | Suresh, Mahima Agumbe |
| Herold, David M. | Suryadevara, Nagender Kumar |
| Herrera-Tapia, Jorge | Swacha, Jakub |
| Hitchens, Michael | Swigon, Marzena |
| Hölbl, Marko | Syafrudin, Muhammad |
| Homoliak, Ivan | Szabó, Zoltán |
| Hong, Ahreum | Szafranko, Elżbieta |
| Hong, Wei-Chiang | Szkaliczki, Tibor |
| Hong, Xiaoyan | Szpyrka, Marcin |
| Horita, Flávio | Taherizadeh, Salman |
| Hosam, El-Ocla | Tan, Liansheng |
| Hossain, Md Shafaeat | Tan, Yihua |
| Hosseini, Saeid | Tang, Wenzhe |
| Hu, Wei | Tang, Xin |
| Hu, Yingjie | Tang, Xu |
| Huang, Chuanhe | Tchechmedjiev, Andon |
| Huang, Jiawei | Teles, Ariel Soares |
| Huang, Shih-Chang | Tello-Oquendo, Luis |
| Huang, Yung-Fa | Tenace, Valerio |
| Hugade, Kiran | Tennant, Jon |
| Hur, Kyeong | Thomaz, Carlos Eduardo |
| Hussain, S.M. Suhail | Thorleuchter, Dirk |
| Hyrynsalmi, Sami | Tiakas, Eleftherios N. |
| Ieong, Ricci | Tomaiuolo, Michele |
| Igual, Jorge | Tomaszuk, Dominik |
| Ijaz, Muhammad Fazal | Tonacci, Alessandro |
| Inazu, Daisuke | Tonelli, Roberto |
| Inkinen, Tommi | Toosi, Adel Nadjaran |
| Iosif, Elias | Topic, Martina |
| Ito, Yoshihiro | Toreini, Ehsan |
| Izaguirre, Alberto Cordoba | Torres Vega, Maria |
| Jaatun, Martin | Torres-Sospedra, Joaquín |
| Jackowska-Strumiłło, Lidia | Torrisi, Nunzio |
| Jafari, Reza | Tourani, Reza |
| Jalal, Ahmad | Tran, Binh Q. |
| Janczewski, Lech | Trappe, Wade |
| Janet, B. | Trestian, Ramona |
| Janjua, Naeem | Tronchin, Lamberto |
| Jasiul, Bartosz | Truyen, Eddy |
| Jeong, Eui Seob | Tsai, Ming-Fong |
| Ji, Zhanlin | Tsang, Kim Fung |
| Jiang, Yongyao | Tsinos, Christos G. |
| Jin, Haiming | Tsiropoulou, Eirini Eleni |
| Johnson, Chris | Turunen, Markku |
| Jong, Gwo-Jia | Twitchell, Douglas |
| Jovanov, Emil | Tzitzikas, Yannis |
| Jun, Sunghae | Udugama, Asanga |
| Jusas, Vacius | Uehara, Minoru |
| Kadowaki, Naoto | Uslaender, Thomas |
| Kaiwartya, Omprakash | Valencia-Palomo, Guillermo |
| Kamienski, Carlos | Valle, Hugo E. |
| Kamilaris, Andreas | Valtierra-Rodriguez, Martin |
| Kanarachos, Stratis | Van Le, Duc |
| Kanellopoulos, Dimitris | Vázquez-Cano, Esteban |
| Kang, James | Vázquez-Poletti, José |
| Kang, Woonhak | Veglis, Andreas |
| Kapociute-Dzikiene, Jurgita | Venkatraman, Sitalakshmi |
| Karabegovic, Almir | Vidhi, Rachana |
| Karakatič, Sašo | Viglia, Giampaolo |
| Karoń, Grzegorz | Vlachos, Dimitrios |
| Karyda, Maria | Vulpe, Alexandu |
| Karyotis, Vasileios | Wan, Hong |
| Kastrin, Andrej | Wang, Chen |
| Katsikas, Sokratis | Wang, Cheng |
| Kebande, Victor R. | Wang, Cheng-Liang |
| Keoh, Sye Loong | Wang, Cong |
| Kerrache, Chaker Abdelaziz | Wang, Ding |
| Khan, Pervez | Wang, Ruowen |
| Khan, Tareq | Wang, Shangguang |
| Kim, Byung-Gyu | Wang, Xiaoyuan |
| Kim, Hyunbum | Wang, Yunsheng |
| Kim, Hyung Seok | Wang, Zhi |
| King, David A. | Wei, Jinlong |
| Kjærland, Frode | Weippl, Edgar |
| Klasnja-Milicevic, Aleksandra | Winkler, Herwig |
| Klingler, Florian | Wohlrabe, Klaus |
| Ko, Hoon | Wöhrer, Alexander |
| Ko, Kwangman | Wojciechowski, Adam |
| Koelle, Rainer | Wong, Lawrence |
| Kong, Deguang | Wu, Bo |
| Kontogiannis, Sotirios | Wu, Chun Ho |
| Koo, Dongyoung | Wu, Chung-Tse Michael |
| Korbel, Piotr | Wu, Jinsong |
| Kotsilieris, Theodore | Wu, Kuop Jui |
| Koukiou, Georgia | Xhafa, Fatos |
| Koulouras, Grigorios E. | Xiao, Liangliang |
| Koutsandria, Georgia | Xing, Wanli |
| Kouziokas, Georgios N. | Xu, Ke |
| Kowsari, Kamran | Xu, Kele |
| Kratzke, Nane | Xu, Wenchao |
| Krejcar, Ondrej | Xu, XiaoLi |
| Kuhn, Nicolas | Xu, Yuquan |
| Kuik, Swee | Yahya, Farah B. |
| Kuladinithi, Koojana | Yang, Hui |
| Kumar, Suryadevara Nagender | Yang, Yue |
| Kumar, Vivek | Yaqoob, Ibrar |
| Kunkel, Julian | Yaqub, Muhammad Azfar |
| Kutscher, Dirk | Yaw, Sean |
| Labus, Aleksandra | Yildirim, Kasim Sinan |
| Lacasta, Javier | Yin, Xiaoqi |
| Laurini, Robert | Yousif, Jabar H. |
| Lavacca, Francesco G. | Youssef, Tarek |
| Lavric, Alexandru | Yu, Wei |
| Lazarescu, Mihai | Yuste-Delgado, Antonio Jesus |
| Lazarov, Andon Dimitrov | Zarpelão, Bruno Bogaz |
| Le, Tuong | Zeng, Kai |
| Łebkowski, Andrzej | Zhang, Lei |
| Lee, Gyu Myoung | Zhang, Meng |
| Lee, Hwansoo | Zhang, Tieling |
| Lee, Munjae | Zhang, XinMing |
| Leister, Wolfgang | Zhang, Xuechen |
| Leitão, João | Zhang, Yuting |
| Lesiuk, Grzegorz | Zhong, Jiandan |
| Lewandowski, Dirk | Zhu, Liehuang |
| Li, Guoqiang | Zhu, Tianqing |
| Li, Huijia | Zhu, Zuqing |
| Li, Jianhua | Zikria, Yousaf Bin |
| Li, Taiyong | Zin, Thi Thi |
| Lin, Hui | Zolotová, Iveta |
| Lin, Kuo-Yi | Zou, Lei |
| Lin, Tsung-Hung |
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