@article{zu223787,
          volume = {52},
          number = {2},
           title = {?????????? ???????? (??) ?????????? ? ? - ?????????????? ????????? ? ??????????? ??????},
          author = {?. ?. ???????? and ?. ?. ????????? and ?. ?. ????? and ?. ?. ???????? and ?. ?. ??????},
            year = {1986},
           pages = {167--171},
         journal = {?????????? ?????????? ??????},
             url = {http://eprints.zu.edu.ua/23787/}
}