@article{zu219915,
          number = {33},
           title = {??????-?????????? ?????????????? ????????????? ?????????????? ?????? ? ?????????},
          author = {?. ?. ??????? and ?. ?. ??????? and ?. ?. ??????},
            year = {1998},
           pages = {75--78},
         journal = {??????????????? ? ????????????????? ???????},
             url = {http://eprints.zu.edu.ua/19915/}
}