@article{zu218411, number = {1(2)}, title = {?????????????? ?????????? ???????? ???????????? ??????? ???????? ??????????? ? ???????? ???????????????? ???????????}, author = {?. ?. ???????}, year = {2013}, pages = {43--46}, journal = {?????????? ??????? ??????}, url = {http://eprints.zu.edu.ua/18411/} }