Tver Beletskaya Elena V. Tver branch of the Russian Presidential Academy of National Economy and Public Administration, 7 Vagzhanova St., Tver 170100, Russia Beletskaya-ev@ranepa.ru Read more about Beletskaya Elena V. Zagumenkina ValentinaS. Tver branch of the Russian Presidential Academy of National Economy and Public Administration, 7 Vagzhanova St., Tver 170100, Russia Valentina_Z_87@list.ru Read more about Zagumenkina Valentina S. Volkov Valery V. Tver State University, Russia, 170100, Tver, Zhelyabova street, 33 volk7valery@yandex.ru Read more about Volkov Valery V. VorobyevaSvetlana N. Tver State Technical University, Russia, 170026, Tver, Afanasy Nikitin embankment, 22 vorobeva-66@mail.ru Read more about Vorobyeva Svetlana N. MakhotinaIlonaYu. Tver State University, Russia, 170100, Tver, Zhelyabova street, 33 maxota@list.ru Read more about Makhotina Ilona Yu. KarpovichMargaritaIgorevna Tver State University, Russia, 170100, Tver, Zhelyabova street, 33 karpovich_m_i@mail.ru Read more about Karpovich Margarita Igorevna StroganovaEvgeniaNakhimovna State Academy of Slavic Culture, 170000, Russia, Tver, Krylova st., 20 enstroganova@yandex.ru Read more about Stroganova Evgenia Nakhimovna PetrovAlekseiAndreevich Tver State Technical University, Russia, 170026, Tver, Afanasy Nikitin embankment, 22 aapetrov-kraeved@mail.ru Read more about Petrov Aleksei Andreevich PavlovaNadejdaIvanovna Tver State Technical University, Russia, 170026, Tver, Afanasy Nikitin embankment, 22 nadija_80@mail.ru Read more about Pavlova Nadejda Ivanovna