@article{zu221819, number = {10}, title = {????????? ???? ????? ?????????????? ?????????? ?????????????}, author = {?. ?. ??????}, publisher = {???????: ?????????? ????? ???}, year = {2015}, pages = {220--222}, journal = {??????????. ??????? ???????? ?????}, url = {http://eprints.zu.edu.ua/21819/} }