@article{zu215776,
           title = {?????? ???????????? ????????????? ???????? ??????? ??????? ??????? ??????? 2-?? ???????},
          author = {?. ?. ??????},
            year = {1987},
         journal = {?????????? ????????? ? ?????????? ???????},
             url = {http://eprints.zu.edu.ua/15776/}
}