@article{zu218268,
          number = {1},
           title = {?????????????????? -?? ? ???????? ?? -??? (-???)},
          author = {?. ?. ?????????},
       publisher = {????},
            year = {2005},
           pages = {237--242},
         journal = {????????? ??????? ????????????? : ??. ????. ??.},
        keywords = {??????????????????, ???????, ??????, ??????????, ??????, ?????????},
             url = {http://eprints.zu.edu.ua/18268/},
        abstract = {? ????? ?????? ???????? ?? ???????? ?????????? ??????????? ? ????????? -??. ?? ?????????? ? ????????? ???????????? ????????? ?????????? ????????? ???? ?? -??  (??????, ?????) ?? ???????? ?? -??? (-???) (???????, ????????). ???????? ?????????? ???, ?? ?????????????? ??????????????? ??????? -?? + ? (??? ??????? ??????? ????) ?? ???????????? ?????? -???(-???).}
}