@article{zu219693, number = {3}, title = {?????????-??????????? ??????? ???????? ????? ? ?????????? ?????????? ?????? ???????? ??? ?. (?? ????????? ?????????? ?. ????????, ?. ?? ?????????, ?. ?. ??????)}, author = {????????? ????? and ?. ?. ?????}, publisher = {??????? "???????"}, year = {2015}, pages = {60--62}, journal = {???????}, url = {http://eprints.zu.edu.ua/19693/} }