Ch. A. Naligama
Yanka Kupala State University of Grodno; Cenex Engineering
Belarus

Chamila A. Naligama – Postgraduate Student, Department of Mathematics and Informatics; Consulting Engineer

22, Ozheshko Str., 230023, Grodno; 550/01/10, Mihindumawatha, Malwatta, Nittambuwa, Sri Lanka, 11880

O. B. Tsekhan
Yanka Kupala State University of Grodno
Belarus

Olga B. Tsekhan – Ph. D. (Physics and Mathematics),
Associate Professor, Associate Professor of the Department
of Mathematical and Information Support of Economic
Systems

22, Ozheshko Str., 230023, Grodno