The publishing and editorial teams would like to thank the following for their invaluable service as 2021 reviewers for this journal. We are very grateful for all the contributions made. It is with their help that the journal has been able to publish such high-quality articles.
- A. Dimoulas, Charalampos
- A. Rafea, Ahmed
- Abed-alguni, Bilal H.
- Adamu Mengistie, Tilahun
- Ahmed Khan, Izhar
- Ahmed, Daniyal
- Ainin, Sulaiman
- Akhmad Habibi, Akhmad Habibi
- Al-Wesabi, Fahd N.
- Ali Shah, Munam
- Ali, Omar
- Alkahtani, Ammar Ahmed
- Alos, Ahmad
- AlShamayleh, Ahmad
- Alshazly, Amira
- Amine Ferrag, Mohamed
- Annie, Xu Wang
- Arefnezhad, Sadegh
- Arshad, Usama
- Bablani, Annushree
- Ballotta, Luca
- Baradaran, Amir Abbas
- Beeler, Patrick E.
- Bello, Sururah A.
- Bhavanam, S. Nagakishore
- Bin Zikria, Yousaf
- Birant, Derya
- Boal, Jaime
- Brahnam, Sheryl
- Byers, J.W.
- C. Gray, Cameron
- Cambria, Erik
- Caporale, Guglielmo Maria
- Carra, Giorgia
- Carrillo-Gómez , Jeniffer Katerine
- Catelli, Rosario
- Cauteruccio, Francesco
- Ceylan, Murat
- Chauhan, Ritu
- Chauhan, Vinod
- Chbeir, Richard
- Chen, Yue
- Chrysoulas, Christos
- Cicioğlu, Murtaza
- Cire, Andre A.
- Coccia, Mario
- Coelho, Vitor N.
- Colak, Cemil
- Coorey, Craig Peter
- Corradini, Enrico
- Cortés-Sánchez, Julián David
- Cotret, Pascal
- Dabhade, Pranav
- Daraio, Elena
- De Meulenaere, Paul
- Demigha, Oualid
- Dewan, Ashraf
- Dimitriou, Nikos
- Din, Ikram Ud
- dos Santos, Bruno Samways
- Douligeris, Christos
- Dursun, Taner
- Ejehiohen Iyawa, Gloria
- En-nahnahi, Noureddine
- Esmaeili, Mona
- Fabio Kon, Fabio Kon
- Fahmideh, Mahdi
- Fang, Zheng
- Feizollah, Ali
- Ferrari Barbosa, Débora Nice
- Forough, Javad
- G.U. Shagi, G.U. Shagi
- Gao, Changyuan
- García-González, Jorge
- Garg, Shruti
- Gellweiler, Christof
- Gholamzadeh Chofreh, Abdoulmohammad
- Gibbon, Samuel
- Gilanie, Ghulam
- Gillam, Andrew R.
- Gong, Kaidi
- González-Fernández, César
- Grundspenkis, Janis
- Gu, Wen-bin
- Gulati, Nancy
- Gunawardena, Maya
- Gupta, B.B.
- Gupta, Deepak
- Gupta, Rashmi
- Gupta, Sejal
- Gustilo , Reggie
- Ha, Le An
- Hamayun, Mian M
- Hamdan, Bensenane
- Harish, Arjun Rachana
- Hasan, Moin
- Hashem, Gharib
- Hassan Kumhar, Sajadul
- Hassan, Syed Asif
- Hayashi, Victor T.
- Heikal Husin, Mohd
- Henry, John
- Hiremath, Basavaraj N.
- Hodosi, Georg
- Houe, Raymond
- Humayun, Mamoona
- Hussain, Zahid
- Iacono, Mauro
- Ibrahim, Heba
- Idrobo-Ávila, Ennio
- iloga, Sylvain
- Inupakutika, Devasena
- Iqbal, Imran
- Islam, Md. Milon
- Jeyaraj, Shiney
- Jia, Guangyu
- Kamoun, Faouzi
- Karthik, R.
- Keikhosrokiani, Pantea
- Kenli Li, Kenli Li
- Khishe, Mohammad
- Khisro, Jwan
- Kim, Eunji
- Kirmani, Mudasir M.
- Klein, Louis
- Koberda, Thomas
- Koh, Seok-Joo
- Kowalkiewicz, Marek
- Kulich, Miroslav
- Kumar Kar, Arpan
- Kumar, Akhil
- Kumar, Harish
- Lahby, Mohamed
- Lamsiyah, Salima
- Lei, Bo
- Li, Chang
- Li, Fan
- Li, Fei
- Li, Frédéric
- Li, Ruilin
- Li, Tianrui
- Li, Ting
- Liao, Xin
- Lin, Chi-Shiou
- Linkov, Igor
- Litvinova, Tatiana
- Liu, Bang
- Liu, Guanjun
- Liu, Jia
- Liu, Maozhen
- Liu, Yuzhu
- Lizondo, Diego
- Lnenicka, Martin
- Lynar, Timothy
- M., Hariharan
- Maglaras, Leandros
- Mahabubul Alam, Gazi
- Mahmoodzadeh, Arsalan
- Malakar, Mousumi
- Malhotra, Dheeraj
- Mangano, Giulio
- Mangat, Veenu
- Manolopoulos, Yannis
- Manzoni, Pietro
- Marín-Díaz, Verónica
- Marozzo, Fabrizio
- Marques, J.P.C.
- Martín-Méndez, Maria
- Masupe, Shedden
- Matsui, Tatsunori
- Mazzola, Matteo
- Menna, Grazia
- Mian, Afsar
- Michailidou, Anna-Valentini
- Mirjalili, Seyedali
- Mishra, Arnab Kumar
- Mishra, Lalita
- Mishra, Ram Krishn
- Mishra, Sanju
- Mohana, R.S.
- Mohd, Mudasir
- Mollel, Michael S.
- Monirul Islam, Md
- Moon, Seong-Eun
- Moorman, J. Randall
- Motiur Rahman, Mohammad
- Mulahuwaish, Aos
- Murat Ozbayoglu, Ahmet
- Murphy, Brenda L.
- N. Sasipriyaa, N.
- Nabipour, Narjes
- Nait Mensour, Omer
- Naldi, Maurizio
- Narayan, D.G.
- Ndashimye, Emmanuel
- Neftali Tulu, Cagatay
- Nehemiah, H. Khanna
- Neshat, Mehdi
- Nezhad, Meysam Majidi
- Nguyen, Ryan D.
- Novitasari, Dian Candra Rini
- Ortiz, Guadalupe
- Ouadfel, Salima
- Ozdemir, M.A.
- P. Natesan, P.
- Parmeet Kaur, Parmeet Kaur
- Patil, Shankargouda
- Patil, Suraj
- Pikhart, Marcel
- Poniszewska-Marańda, Aneta
- Pothuganti, Karunakar
- Privat, Jean
- Prokofyeva, Natalya
- Purwanto, Christian Nathaniel
- R. Prabha, R. Prabha
- Rahman, Mahfuzur
- Rahmeni, Raoudha
- Rai, Sawan
- Rajan, Annie
- Rajangam, Marx
- Rajaoarisoa, Lala
- Rama, Boddireddy
- Ramanathan , L.
- Rani, Ruby
- Rao, Dhananjai
- Rao, Sanjeev
- Raul Carpio, Carlos
- Raza Naqvi, Muhammad
- Renda, Alessandro
- Reyna, Sashiko Shirai
- Riani, Marco
- Robert Haupt, Michael
- Roh, Taewoo
- Rojas, Hesmeralda
- Rubinstein, Marcelo G.
- Safi, S.
- Sahu, Aditya Kumar
- Saleh, Yahya
- Sallati, Carolina
- Samiappan, Dhandapani
- Santoso, Joan
- Saqib, Zafeer
- Scott Paka, William
- Serajul Hakim, Sheikh
- Şerban, Camelia
- Setiawan, Esther Irawati
- Shafeeq B M, Ahamed
- Shamsuzzoha, A.H.M.
- Shaolong Sun, Shaolong Sun
- Sharma, Akashdeep
- Sharma, Anuj
- Sheikh, Saeed Ahmad
- Shrestha, Anup
- Shulla, Kalterina
- Siagian, Pandapotan
- Silega, Nemury
- Singh Gill, Harmandeep
- Singh, Saurabh
- Snowdon, Jane L.
- Soar, Jeffrey
- Srivastava, Gautam
- Suhartono, Derwin
- Sun, Leilei
- Swain, Gandharba
- Synytsya, Kateryna
- T. Kosztyán, Zsolt
- Tahseen Ali, Ashraf
- Tan, Min
- Tang, Hualong
- Tarik, Ahajjam
- Tatar, Unal
- Teixeira, João Paulo
- Thakur, Narina
- Tingting Zhang, Tingting Zhang
- Torres Moreno, Rafael
- Umrigar, Zerksis
- Urošević, Dragan
- Ursino, Domenico
- Van Meter, Heather J.
- Vanommeslaeghe, Yon
- Varajão, João
- Vasilakos,, Athanasios
- Veloso, Artur
- Venters, Will
- Verma, Karan
- Victória Barbosa, Jorge Luis
- Vidović, Milorad
- Violettas, George
- Virgili, Luca
- Vlačić, Božidar
- Waheed, Hajra
- Walters, William H.
- Wang, Chih-Hsuan
- Wang, Haifeng
- Wang, Jin
- Wang, Zhendong
- Waseem Iqbal, Muhammad
- Wei, Lirong
- Winiarti, Sri
- Wolf, Detlef
- Wu, Lifeng
- Xu, Zhanpeng
- Yang, Liu
- Yao, Junfeng
- Yarza, Irune
- Yousef, Farhaoui
- Yuan, Haitao
- Zawadzka, Danuta
- Zeginis, Dimitris
- Zhang, Pengpeng
- Zhang, Yongqing
- Zykov, Sergey V.