@article{zu21637, number = {29}, title = {???????????????? ??????????? ???????? ? ???????? ??????????? ?????}, author = {?. ?. ??????????}, year = {2006}, pages = {219--222}, journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????}, url = {http://eprints.zu.edu.ua/1637/}, abstract = {? ?????? ?????????????? ????????? ????????? ?????????? ???????? ??????? ? ?????? ??????????????????? ????????? ???????? ????? ??? ????.} }