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:
- Aamir, Dr Muhammad
- Abas, Mohamad Aizat
- Abdul Aziz, M.S.
- Abdullah, Mz
- Akhtar, Muhammad Bilal
- Aksöz, Sezen
- Al-Ma'aiteh, Tareq
- Alaazim, Mohammed
- Ali, Bakhtiar
- Altan, Aytaç
- Arunasalam, Mageswaran
- Barbosa, Flavia
- Blecha, Tomáš
- Borecki, Janusz
- Boušek, Jaroslav
- Bušek, David
- Cheung, Noé
- Ciocci, Rick
- Collins, Maurice
- De Oliveira Rodrigues, Nelson José
- Deshpande, Madhuri
- Drápala, Jaromir
- Dušek, Karel
- Dziedzic, Andrzej
- Ebrahimian, Ali
- Ekpu, Mathias
- Fang, Kun
- Felba, Jan
- Fima, Przemyslaw
- Fornaro, Osvaldo
- Gan, Chong Leong
- Gan, Guisheng
- Gao, Yulai
- Goh, Yingxin
- Górecki, Krzysztof
- Guo, Fu
- Han, Xu
- Hasnine, Md
- Hodulova, Erika
- Hosseinzaei, Behnam
- Huh, Seok Hwan
- Ismail, Norliza
- Jalar, Azman
- Janeczek, Kamil
- Kakitani, Rafael
- Kanlayasiri, Kannachai
- Kar, Abhijit
- Khor, Chu Yee
- Kong, Xiangxia
- Krammer, Oliver
- Li, Wangyun
- Li, Yuefeng
- Lim, Chong Hooi
- Liu, Yongchang
- Lu, Xiuzhen
- Ma, Yunzhu
- Mårtensson, Gustaf
- Mayappan, Ramani
- Mihailovic, Marija
- Min, Zhixian
- Mohd Sharif, Mohamad Fikri
- Muhamed Mukhtar, Muhamed Abdul Fatah
- Naffakh-Moosavy, Homam
- Ng, Fei Chong
- Nyarko, Frank
- Pan, Huiming
- Pinto Da Silva, Cassio Augusto
- Podsiadły, Bartłomiej
- Pustokhina, Inna
- Putaala, Jussi
- Ramli, Mohamad Riduwan
- S. Gumaan, Mohammed
- Saad, Abdullah Aziz
- Sabet, Hamed
- Salmani, Mohammad
- Samavatian, Vahid
- Shalaby, Rizk
- Sharif, A.
- Siswanto, Waluyo Adi
- Sitek, Janusz
- Spinelli, José
- Steiner, Frantisek
- Sypien, Anna
- Tan, Yansong
- Tian, Yanhong
- Tsai, Tsung-Nan
- Tung, Lun Hao
- Vincent, James
- Wang, Hu
- Wang, Jun
- Xue, Songbai
- Yi, Hao
- Yi, Sung
- Zhang, Hao
- Zhao, Huihuang
- Zhou, Longzao
- Zulkifli, Muhammad Nubli