@inproceedings{zu26440,
       booktitle = {????????????? ???????-?????????? ??????????? "????????? ? ???????? ? ????"},
           title = {?????? ? ?????? ??????????? ????????? 20-? ????? ?? ??.},
          author = {???? ???????},
            year = {1996},
           pages = {109--112},
             url = {http://eprints.zu.edu.ua/6440/}
}