@article{zu226128,
          volume = {57},
           month = {???????},
          author = {?. ?. ?????????},
           title = {????????? ?????????? ?????????? ????????????? ????????? ? ?????????????? ???????? ?invitation? (?? ????????? ?????????????? ????????????)},
       publisher = {????????? ???????????? ??????????? ????? ?????? ????????},
         journal = {????? ? ????????????? ??????? ?????},
           pages = {249--254},
            year = {2016},
             url = {http://eprints.zu.edu.ua/26128/}
}