@book{zu231186, title = {????????????????????? ?????? ????????? : ????.-?????. ?????. (??????????? ?????)}, author = {?. ?. ????????? and ?. ?. ???????}, publisher = {??????? : ???-?? ??? ??. ?. ??????}, year = {2016}, url = {http://eprints.zu.edu.ua/31186/} }