Пермь
Antipina M. G.Perm State University, Russia, 614990, Perm, Bukireva street, 15shibanova7@mail.ru
ShibanovaN.L.Perm State University, Russia, 614990, Perm, Bukireva street, 15shibanova7@mail.ru
SuvorovV.I.Perm State University, Russia, 614990, Perm, Bukireva street, 15belevich@psu.ru
ChudinovaL.A.Perm State University, Russia, 614990, Perm, Bukireva street, 15belevich@psu.ru