@article{zu219672, number = {3}, title = {???????????? ??????? ??????????? ???? ? ?????????? ?. ?. ????????????}, author = {???? ???????? and ?. ?. ????????}, publisher = {??????? "???????"}, year = {2015}, pages = {24--27}, journal = {???????}, url = {http://eprints.zu.edu.ua/19672/} }