@article{zu218380, number = {1(2)}, title = {?????????? ???????? ??????? ? ?????????? ?????? ????????????? ?????????????? ???????? ? ??????? ????????}, author = {?. ?. ???????}, year = {2013}, pages = {12--14}, journal = {?????????? ??????? ??????}, url = {http://eprints.zu.edu.ua/18380/} }