@article{zu26160, number = {26}, title = {???????? ???????? ???????? ??????????? ? ???????????? ?????????? ?????? ? ???????? ???????????}, author = {?. ?. ??????}, publisher = {?????????: ???}, year = {2008}, pages = {144--148}, journal = {???? ?????????}, url = {http://eprints.zu.edu.ua/6160/} }