@article{zu218393, number = {1(2)}, title = {???????????? ???????????????? ?????????????? ??????? ?????? ????????? ? ???????? ????????????? ?????????? ????????}, author = {?. ?. ??????????}, year = {2013}, pages = {19--22}, journal = {?????????? ??????? ??????}, url = {http://eprints.zu.edu.ua/18393/} }