Krasnodar DeminaLydmilaI. Kuban State University, 350040, Russia, Krasnodar, Stavropolskaya st., 149 de-li@yandex.ru Read more about Lydmila I. Demina AndronnikovaOlgaV. Kuban State University, 350040, Russia, Krasnodar, Stavropolskaya st., 149 andronnikova_olg@mail.ru Read more about Olga V. Andronnikova StrelnikovaLarisaYuryevna Kuban State University, 350040, Russia, Krasnodar, Stavropolskaya st., 149 lorastrelnikova@yandex.ru Read more about Strelnikova Larisa Yuryevna BorisovaOlgaGennadievna Kuban State University, 350040, Russia, Krasnodar, Stavropolskaya st., 149 leliastom@mail.ru Read more about Borisova Olga Gennadievna