@article{zu216717,
           title = {??????? ????? ?????? ? 20-30-? ????? ?? ??.},
          author = {????? ???????},
       publisher = {???-?? ??? ??. ?. ??????.},
            year = {2009},
           pages = {73--75},
         journal = {????????? ?? ?????????? ??????????? ????????-??????????? ???????????, ??????????? 90-????? ????????????? ?????????? ???????????? ????? ????? ??????. ??????? ???????? ?????. ? ???????.},
             url = {http://eprints.zu.edu.ua/16717/},
        abstract = {? ?????? ??? ?????? ???????? ? ????????? ????? ?????? ????? ???????, ???????????  - ?????????? ??????, ??? ???? ??????????  13 ??????? ?????????? ???????? ? ??????? ? ?. ???????.}
}