K. Yu. Ivanova Chuvash State University, Cheboksary Russian Federation
M. V. Kuzmin Chuvash State University, Cheboksary Russian Federation
N. I. Kol’tsov Chuvash State University, Cheboksary Russian Federation
© Chimica Techno Acta, 2014-2020ISSN 2411-1414 (Online), ISSN 2409-5613 (Print)