@article{zu216534, title = {???????? ?????????? ????????? ???????? ???????? ?? ??????????? ??????????? ???????-??????????????? ?????? ? ?????? ???????? ?????}, author = {?. ?. ???????????}, publisher = {???????: ?? "????", ??? ????? ????? ??????}, year = {2015}, pages = {506--508}, journal = {??????? ???????? ????? "?????????? ??????????? - 2015"}, url = {http://eprints.zu.edu.ua/16534/} }