Abakan DemchukEkaterinaYurievna Katanov State University of Khakassia, 655017, Russia, Republic of Khakassia, Abakan, Lenina st., 90 emalika1@mail.ru Read more about Demchuk Ekaterina Yurievna KadoloTatianaAlexandrovna Katanov State University of Khakassia, 655017, Russia, Republic of Khakassia, Abakan, Lenina st., 90 lacriza@list.ru Read more about Kadolo Tatiana Alexandrovna