P.M. Dovgalyuk - Ph.D., Assistant professor in Yaroslav-the-Wise Novgorod State University. E-mail: Pavel.Dovgaluk@ispras.ru
N.I. Fursova - Student of Yaroslav-the-Wise Novgorod State University. E-mail: Natalia.Fursova@ispras.ru
D.S. Dmitriev - Student of Yaroslav-the-Wise Novgorod State University. E-mail: Denis.Dmitriev@ispras.ru

P.M. Dovgalyuk - Ph. D. (Eng.), Associate Professor, Novgorod State University. E-mail: pavel.dovgaluk@gmail.com M.A. Klimushenkova - Junior Research Scientist, Novgorod State University. E-mail: maria.klimushenkova@ispras.ru D.S. Dmitriev - Junior Research Scientist, Novgorod State University. E-mail: denis.dmitriev@ispras.ru V.A. Makarov - Ph. D. (Eng.), Associate Professor, Novgorod State University. E-mail: vladimir.makarov@ispras.ru