Vasileios Belagiannis, Friedrich-Alexander University Erlangen-Nuremberg, Germany

Natālija Cudečka-Puriņa, BA School of Business and Finance, Latvia

Abdul Ghani Albaali, Princess Sumaya University for Technology, Jordan

Hadi Sarvari, Islamic Azad University, Iran

Bashlay Sergiy, Sumy National Agricultural University, Ukraine

Lorenzo Baraldi, University of Modena and Reggio Emilia, Italy

Michail Panagopoulos, Ionian University, Greece

Ranjit Kr. Sarmah, Assam Down Town University, Guwahati

Gabriel Ayodeji Ogunmola, Machine Building Institute Andijan, Uzbekistan