Ryazan IlyukinaLudmilaVyacheslavovna Ryazan State University, Russia, Ryazan, 390000, Svobody st., 46 ILV72@yandex.ru Read more about Ilyukina Ludmila Vyacheslavovna SokolovaReginaAlgimanto Ryazan State University, Russia, Ryazan, 390000, Svobody st., 46 r.sokolova@rsu.edu.ru Read more about Sokolova Regina Algimanto