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 the contributions made. With their help, the journal has been able to publish such high-quality articles:
- Aguilar, J.F. Gómez
- Alves, Rita M.B.
- Ansari, Mubashir
- Aref , Sadeghi-Nik
- Autelitano, Federico
- Awrejcewicz, Jan
- Aydin, Orhan
- Behnood, Ali
- Bhatti, M.M.
- Bollada, P.C.
- Bonnecaze, Roger T.
- Bruhns, Otto
- Cao, Zhenggang
- Carara, Marcos
- Cardoso, Elaine Maria
- Carlone, Pierpaolo
- Chang, Haichao
- Chen, Lin
- Chen, Pan
- Chen, Shuming
- Chen, Xuehui
- Chen, Yuan
- Cheng, Aiguo
- Chiashi, Shohei
- Ciecieląg, Krzysztof
- Civalek, Ömer
- Clavier, Florent
- Dag, Serkan
- Davim, J. Paulo
- De Lazaro, Sergio Ricardo
- De Medeiros, Ricardo
- Dezellus, O.
- Dimitri, Rossana
- Ding, Peng
- Ekiz, Cesur
- Ericson, Tristan
- Erto, A.
- Esen, Ismail
- Ezzat, Magdy
- Farahani, Behzad Vasheghani
- Fedorenko, Alexey
- Feng, Chuang
- Foraboschi, Paolo
- Gambardella, A.
- Giacomello, Giovanni
- Goli, Elyas
- Gonullu, Meryem Polat
- Goud, Mudimallana
- Grazzini, Alessandro
- Hammouch, Zakia
- Hasnain, Jafar
- He, Huan
- He, Ji-Huan
- Heydari, Mohammad Hossein
- Hmeidat, Nadim
- Hu, Weiping
- Huang, Biao
- Huang, Da
- Huang, Xiaoming
- Hui, Lü
- Hussein, Ahmed Kadhim
- Iasiello, Marcello
- İğret Araz, Seda
- Izham, Zaki
- Jackson, Mark James
- Jawad, Ali
- Jiang, Wenchun
- Jiang, Wenming
- Jordi Nebot, Lluïsa
- Karamanli, Armagan
- Katunin, Andrzej
- Kausar, A.S. M. Zahid
- Kiani, Y.
- Koduru, Janardhan Reddy
- Kurban, Mustafa
- Kurniawan, Rendi
- Lacidogna, Giuseppe
- Li, Chun
- Li, Hui
- Li, Lang
- Li, Lei
- Li, Liang
- Li, Wenbo
- Li, Xian-Fang
- Li, Yiming
- Lian, Ye Da
- Liang, Xin
- Liang, Yu-Jui
- Lignola, Gian Piero
- Lima, Matheus
- Lin, Yanhai
- Liu, Wen
- Liu, Yongjie
- Liu, Zhi-Quan
- Love, J.S.
- M. , Wasim Akhtar
- Machado De Sousa, Osmar
- Markopoulos, Angelos
- Masrour, R.
- Mbarek, Ayoub
- Meng, Qinghua
- Michel, Magdalena
- Minak, G.
- Mirjalili, Seyedali
- Mirrashid, Masoomeh
- Mohtadi-Bonab, M.A.
- Moreno, Francisco M. Baena
- Msabawy, Ali
- Natarajan, S.
- Nemes, Ovidiu
- Nguyen, Van-Tu
- Nikbin, Karman
- Nishiyama, Satoshi
- Niu, Y.
- Ntuli, Freeman
- Obradović, Vera
- Oliveira, Éder
- Örnek, Cem
- Oudina, F. Mebarek
- Pandiyan, G. Karthik
- Pei, Hai Qing
- Ping, Xiang
- Placidi, Luca
- Prikazchikov, D.
- Pu, Xingbo
- Qian, Feng
- Qiu, Lin
- Quaresma, Joao
- Quiroz, Heiddy P.
- Rahimi-Gorji, Mohammad
- Rana, Dipak
- Rech, Joel
- Ren, Shisong
- Ribeiro, Hélio
- Rudrapati, Ramesh
- Ryali, Lokaditya
- Sarıkaya, Murat
- Sartorato, Murilo
- Scholle, M.
- Shekher, Sushant
- Shen, Jinlei
- Shi, Jinjie
- Shiryayev, Oleg
- Silva, Hugo
- Sobhi, Saeid
- Srivastava, Shekhar
- Sujiatanti, Septia Hardy
- Sun, Yuxin
- Surucu, Gokhan
- Surzhenkov, Andrei
- Tan, Wei
- Temizer, Umit
- Thompson Martinez, Rogfel
- Tornabene, Francesco
- Tornabene, Francesco
- Trinh, Luan C.
- Turkyilmazoglu, M.
- Ventura, Carlos
- Vestroni, Fabrizio
- Wang, Bin
- Wang, Gang
- Wang, Jianjun
- Wang, Lei
- Wang, Wensheng
- Wang, Xiaojun
- Wang, Zequn
- Wang, Zhanqi
- Wei, Zhaoyu
- Wood, J.
- Xiang, Rong
- Xiao, Lijun
- Xu, Jinyang
- Xu, Lianyong
- Xu, Ming
- Yan, Qingzhi
- Yang, Donghui
- Yang, Fan
- Yang, Guang
- Yang, Wei Zhu
- Yevtushenko, Aleksander
- Ying, Jin
- You, Lingyun
- Yu, Yuanlie
- Zafar, Tayyab
- Zeng, Qiang
- Zhang, Shuye
- Zhang, Yaou
- Zhao, Guangwei
- Zhong, Shun
- Zhou, Changcong
- Zhou, Hongyue
- Zong, Zhouhong
- 张, 吟
- 李, 华