@article{zu23523, number = {11}, title = {??? ???? ?????????? ??????? ??????? ?????}, author = {?. ?. ??????????? and ?. ?. ??????????}, year = {2003}, pages = {222--225}, journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????}, url = {http://eprints.zu.edu.ua/3523/}, abstract = {? ?????? ????????????? ??????? ?????, ?? ??????? ??????? ??????? ????? ? ????? ???????, ??????? ???? ???????? ???????. ?????????? ??????????? ???? ???????.} }