@article{zu214141,
          volume = {18},
          number = {3},
          author = {?. ?. ????????? and ?. ?. ??????? and ?. ?. ???????????},
           title = {????????
??????? ????????????? ???????? ??????? ? ??????????? ??? ???????? ??????? ????},
       publisher = {?? ????},
         journal = {????????????? ??????},
           pages = {158--159},
            year = {1989},
             url = {http://eprints.zu.edu.ua/14141/}
}