@article{zu213712, title = {?????????? ????????? ???????? ?? ?????????? ???????????? ???}, author = {?. ?. ?????????}, publisher = {???-?? ??? ????? ????? ??????}, year = {2011}, pages = {13--18}, journal = {?????? ? ???????? ?????????? ????????? ???????? ?? ???????????? ??? : ??. ?????????? ???????????}, url = {http://eprints.zu.edu.ua/13712/} }