Ульяновск
CherevatenkoOlgaI.
Ulyanovsk State I. N. Ulyanov Pedagogical University,
4, Ploshchad’ 100-letiya so dnya rozhdeniya V. I. Lenina, Ulyanovsk, Russia, 432063
chai@pisem.net
Bogdanchuk Ol'ga Alexsandrovna
Ulyanovsk State University,
42, Lev Tolstoy Str., Ulyanovsk, Russia, 432017
bogdanchuk_o_a@mail.ru
