@article{zu210288,
          number = {71},
           title = {???????? ???????????? ????????? ?????????????
? 20-? ? 50-? ????? ?? ????????},
          author = {?. ?. ?????},
       publisher = {???-?? ??? ??. ?.??????},
            year = {2013},
           pages = {48--52},
         journal = {?????? ????????????? ?????????? ???????????? ????? ????? ??????},
             url = {http://eprints.zu.edu.ua/10288/},
        abstract = {? ?????? ?????? ?????????? ????????-????????????? ??????????? ??????? ?????????? ?????????????
? ??????? ? 20-? ? 50-? ????? ?? ????????. ?????????? ??????? ??????? ??????????? ? ????????
???????? ?? ???? ?????????? ??????????. ???????? ??????? ?????? ?????????? ?? ???? ?? ??'???
???????????? ?? ??????????????? ?????, ??? ? ?? ????? ???????????; ???????? ????? ????????? ????
???????????? ??????????.}
}