@article{zu29472, month = {???????}, title = {????????? ???'???}, author = {?. ?. ??????? and ?. ?. ???????????}, publisher = {??? ??. ?. ??????}, year = {2013}, pages = {203--204}, journal = {?????????? ??????????? - 2013}, url = {http://eprints.zu.edu.ua/9472/}, abstract = {? ??????? ?????????? ?????? ???????? ? ??????? ????????????, ??? ?????????? ?????? ?????? ????????? ???????????? ? ????????. ????????? ??? ???? ????? ? ?????????? ????????????? ??? ??? ??????????? ???????. ??????? ??????, ???????? ? ?????? ???????? ? ????????, ? ??????????? ????? ???????? ???????? ???????????????, ??? ???? ???????? ?? ????? ????????.} }