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:

• Ab Wahid, Roslina
• Abdul Halim Lim, Sarina
• Abdullah, Shardy
• Abellana, Dharyll Prince
• Aboelmaged, Mohamed
• Abreu, António
• Abu-Rumman, Ayman
• Achcar, Jorge
• Adawiyah, Wiwiek Rabiatul
• Adebanjo, Dotun
• Afsharnia, Fatemeh
• Agarwal, Kamal Nayan
• Agarwal, Mohini
• Ahmad, Rosmaini
• Ahmadi, Arash
• Ahmed, Qadeer
• Ahuja, Inderpreet
• Akbarzadeh Khorshidi, Hadi
• Akhter, Mahmud
• Akıncıoğlu, Sıtkı
• Akroush, Mamoun
• Aksezer, Çağlar
• Al Balushi, Mohammed
• Al Hawari, Maen
• Al-Dahidi, Sameer
• Al-Dhaafri, Hassan
• Al-Omari, Amer
• Al-Refaie, Abbas
• Ali, Irfan
• Ali, Sadia Samar
• Alidrisi, Hisham
• Alliprandini, Dario
• Alsmadi, Majed
• Amar, Kifayah
• Amaria, Pesi
• Anand, Adarsh
• Anderson, Mark
• Angeli, Ioannis
• Annamalai, V. E.
• Ansari, Mohammad
• Antomarioni, Sara
• Antony, Jiju
• Antunes, Marina
• Anwar, Meddaoui
• Aslam, Muhammad
• Aslan, Emre
• Assis, Edilson
• Atashgar, Karim
• Atinga, Roger
• Avikal, Shwetank
• Awad, Mahmoud
• Awwad, Abdulkareem
• Azmi Murad, Masrah Azrifah
• Backlund, Fredrik
• Badar, M. Affan
• Badhotiya, Gaurav Kumar
• Balamurali, Saminathan
• Balzer, William
• Bameni Moghadam, M.
• Baraiya, Rajendra
• Barbosa, Guilherme Eduardo Da Cunha
• Barradas, Jose
• Barravecchia, Federico
• Barsalou, Matthew
• Bassi, Francesca
• Basu, Rana
• Bernardo, Merce
• Besseris, George
• Bevilacqua, Maurizio
• Bewoor, Anand
• Bhangu, Navneet
• Bharath, K. N.
• Bhargava, Cherry
• Bhatia, Manjot Singh
• Bhola, Prabha
• Boakye, Kwabena
• Bocanet, Anca
• Bouami, Driss
• Boyapati, Srinivas
• Brodke, Michelle
• Bueno, Carlos
• Burrows, Dan
• Cagnin, Fernanda
• Calvo-Mora, Arturo
• Cândido, Carlos
• Canet Giner, María Teresa
• Carnerud, Daniel
• Carvalho, André
• Carvalho, Luciano
• Carvalho, Maria
• Celso De Campos, Fernando
• Chakraborty, Ayon
• Chattinnawat, Wichai
• Chaudhary, Amit
• Chen, Tser
• Chen, Zhixiang
• Cheng, Edwin
• Chiarini, Andrea
• Chiodo, Elio
• Chiu, Kuei-Chen
• Chockalingam, Raju
• Chong, Chin Wei
• Chopra, Arvind
• Choudhary, Ankur
• Ciarapica, Filippo Emanuele
• Costa, Nélson
• Costa, Susana
• Cruz, Jesus
• Cudney, Elizabeth
• Dabestani, Reza
• Dal Forno, Ana Júlia
• Dani, Samir
• Das, Anupam
• Das, Subhrata
• De Aguiar, Dimas
• De Grosbois, Danuta
• Debnath, Roma
• Desai, Tushar
• Dhanya, M.
• Di Bona, Gianpaolo
• Djassemi, Manocher
• Do Carmo, Manuel
• Domingues, Pedro
• Douglas, Jacqueline
• Dutta, Anupam
• Ebrahimipour, Vahid
• Echchabi, Abdelghani
• El Barkany, Abdellah
• Elg, Mattias
• Erdem, Sabri
• Ershadi, M. J.
• Ershadi, Mohammad Javad
• Escrig, Ana
• Estiri, Mehrdad
• Facchini, Francesco
• Faisal, Mohd. Nishat
• Farooq Jan, Muhammad
• Farooq, Muhammad Shoaib
• Fazlollahtabar, Hamed
• Fernandes, Marcelo
• Ferreira Da Silva, Eduardo
• Foladchang, Marzieh
• Fonseca, Ana
• Fonseca, Luis
• Franceschini, Fiorenzo
• Frenkel, Ilia
• Furterer, Sandy
• Galetto, Maurizio
• Gambi, Lillian
• Gan, Chong Leong
• Ganesh, L. S.
• Ganguly, Kunal
• Geng, Jianyang
• Georgiev, Svetoslav
• Gheith, Mohamed
• Ghosh, Tirthankar
• Gianni, Maria
• Gijo, E. V.
• Gohel, Jishnu
• Gonzalez, Tomas
• Goswami, Mohit
• Goswami, Shreya A.
• Gotzamani, Katerina
• Goyal, Gaurav
• Goyal, Nupur
• Grigg, Nigel
• Gunawan, Indra
• Guo, Jian
• Gupta, Gajanand
• Gupta, Puneet Kumar
• Gupta, Tarun
• Gurumurthy, Anand
• Habtoor, Nasser
• Hajipour, Vahid
• Haq, Saif Ul
• Haridoss, Venu
• He, Zhen
• Hess, James
• Hoerl, Roger
• Hossain, Mohammad
• Hurreeram, Dinesh
• Isaksson, Raine
• Ismail, Zul-Atfi
• Jain, Abhishek
• Jain, Rajeev
• Jain, Vipul
• Jakhar, Suresh K.
• Javed, Saad Ahmed
• Jilcha, Kassu
• Jindal, Anil
• Joghee, Ravichandran
• Johannssen, Arne
• John, Boby
• Jraisat, Luai
• Jung, Joo
• Jusoh, Ahmad
• Kamranrad, Reza
• Kapila, Munish
• Kapuçugil Ikiz, Aysun
• Kapur, P. K.
• Karanikas, Nektarios
• Karevan, Ali
• Kaur, Manwinder
• Kazancoglu, Yigit
• Kess, Pekka
• Khalaj Hedayati, Mehrnaz
• Khalfallah, Meriem
• Khalid, Rameez
• Khalili, Amjad
• Kharub, Manjeet
• Khorashadizadeh, Mohammad
• Khorshidvand, Behrooz
• Khourshed, Nevien
• Khoury, Sam
• Kidambi, Dr.Sudarsanam
• Kim, Dong-Young
• Kipper, Liane
• Klochkov, Yury
• Konda, Ramesh
• Kosztyán, Zsolt Tibor
• Krimi, Issam
• Krishnan, Ragi
• Kumar Mangla, Sachin
• Kumar, Akshay
• Kumar, Amaresh
• Kumar, Amit
• Kumar, Anil
• Kumar, Anil
• Kumar, Anuj
• Kumar, Pardeep
• Kumar, Patanjal
• Kumar, Ravinder
• Kumar, Santosh
• Kumar, Satish
• Kumar, Vijay
• Kumar, Vikas
• Kumar, Vimal
• Kwarteng, Amoako
• Lai, Kim-Hung
• Lande, Manisha
• Laureani, Alessandro
• Levashenko, Vitaly
• Li, Linda
• Li, Shoujun
• Liang, Yi Hui
• Lim, Li-Chen
• Liu, Hu-Chen
• Liu, Yiliu
• Lopes, Isabel
• Lourenço, Luis
• Ma, Jie
• Macedo, Isabel
• Machado, Marcio
• Majumdar, Rana
• Majumdar, Sujit Kumar
• Malik, Shahab Alam
• Manglik, Monika
• Manro, Rajan
• Marques, Pedro
• Martínez-Costa, Micaela
• Martínez-Lorente, Angel
• Mastrogiacomo, Luca
• Matai, Rajesh
• Mazzuto, Giovanni
• Melao, Nuno
• Mellal, Mohamed
• Metre, Sujit
• Min, Hokey
• Mishra, Rajesh
• Modgil, Sachin
• Modgil, Vikas
• Mohd Ali, Hairuddin
• Mohey, Aman
• Motwani, Jaideep
• Moura E. Sá, Patrícia
• Mukherjee, Indrajit
• Munmun, Mousumi
• Nadakuditi, Goutham Kumar
• Nagiya, Kuldeep
• Naidu, Praveen V.
• Naikan, V. N. A.
• Nakamura, Taishin
• Navas, Helena
• Nazemi, Jamshid
• Neves, Joao
• Ngah, Abdul Hafaz
• Nóvoa, Henriqueta
• Oke, Ayodeji
• Oke, Sunday
• Oliveira, Rui
• Oprime, Pedro
• Oraedu, Chukwunonso
• Ozaki, Hirokazu
• P. N. Kannan, K. Sumitha
• Panchal, Dilbagh
• Pandey, Drpurnendu Shekhar
• Pandian, Annamalai
• Patil, Rajkumar
• Patil, Suyog
• Pepper, Matthew
• Piccirillo, Isabela
• Picolo, Jaime
• Poduval, Prasanth
• Potdar, Prathamesh
• Potena, Domenico
• Pradeepa Veerakumari, K.
• Prajapati, D. R.
• Prakash, Anand
• Psomas, Evangelos
• Punia, Keshav
• Rai, Rajiv
• Rajabi Asadabadi, Mehdi
• Ram, Mangey
• Ramesh, K. T.
• Ramessur, Vinaysing
• Ramires, Francisco
• Rantala, Tero
• Raval, Shruti
• Rawal, Dilip Kumar
• Relkar, Anand
• Rew, Dongjun
• Rezei, Ahmadreza
• Ribeiro De Jesus, Abel
• Ridwan, Asep
• Rodgers, Bryan
• Rout, Matruprasad
• Roy, Shirshendu
• Roy, Soumya
• Sagnak, Muhittin
• Salam, Abdul
• Saleh, Mohammed
• Salehi, Mahdi
• Sampaio, Paulo
• Sant'anna, Angelo
• Sant'anna, Annibal Parracho
• Santos, Gilberto
• Saraiva, Pedro
• Sarkar, Ashok
• Sarrico, Cláudia S.
• Savasci, Ipek
• Savsar, Mehmet
• Schniederjans, Dara
• Sebastianelli, Rose
• Sedani, Chetankumar
• Shahabuddin, Syed
• Shahin, Arash
• Sharma, Anand
• Sharma, Gajendra
• Sharma, Manu
• Sharma, Monica
• Sharma, Pardeep
• Sharma, Rajiv
• Shojaie, Amir
• Shokri, Alireza
• Shriwastawa, Ashok
• Shukla, Seema
• Sibevei, Ali
• Silva, Brena
• Silva, Cláudia
• Silva, Graça
• Silvestri, Alessandro
• Singh, Bikram Jit
• Singh, Harjot
• Singh, Harwinder
• Singh, Jagmeet
• Singh, Kanwarpreet
• Singh, Rajesh K. R.
• Singh, Rohit
• Singh, Shalini
• Singh, V. B.
• Singla, Surinder
• Slamet, Alim
• Sleimi, Mohammad
• Soni, Gunjan
• Sony, Michael
• Sood, Naveen
• Sreedharan, Raja
• Sreedharan, V. Raja
• Srivastava, Manoj
• Su, Hsiang-Ting
• Su, Qin
• Suarez-Barraza, Manuel
• Sumaedi, Sik
• Sunder M., Vijaya
• Swarnakar, Vikas
• Taheri, Ghazale
• Takala, Josu
• Talib, Faisal
• Tan, Peck-L.
• Tandon, Abhishek
• Teli, Shivagond
• Theodoridis, Prokopis
• Thillagovindan, Natesan
• Toke, Lalit
• Triantafyllou, Ioannis
• Tripathi, Yogesh
• Truong, Huy
• Tsarouhas, Panagiotis
• Twum, Stephen
• Tyagi, Subhi
• Valmohammadi, Changiz
• Van Iwaarden, Jos
• Velimirovic, Dragana
• Vezzetti, Enrico
• Vinodh, S.
• Voon, Boo Ho
• Wangikar, Sandeep S.
• Wankhade, Lalit
• Waterbury, Theresa
• Wu, Sarah
• Yadav, Gunjan
• Yazdani, Bita
• Yunusa-Kaltungo, Akilu
• Yusr, Maha
• Zaitseva, Elena
• Zeng, Wenbin
• Zhang, Dongli
• Zhang, Min
• Zimon, Dominik
• Zirar, Araz
• Zu, Xingxing