E. R. Babich
Yanka Kupala State University of Grodno Belarus
Elena R. Babich – Postgraduate Student of the Department of Mathematical Analysis, Differential Equations and Algebra
22, Ozheshko Str., 230023, Grodno
I. P. Martynov
Yanka Kupala State University of Grodno Belarus
Ivan P. Martynov – Dr. Sc. (Physics and Mathematics), Professor, Professor of the Department of Mathematical Analysis, Differential Equations and Algebra
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