@article{zu211162, number = {17}, title = {??????????? ?????????????? ???????? ????????????? ???????????????? ???.}, author = {?. ?. ?????????? and ?. ?. ???????}, publisher = {????}, year = {2001}, pages = {15--19}, journal = {?????? ????.???????? ?????.}, url = {http://eprints.zu.edu.ua/11162/}, abstract = {?????????? ??????????? ??????? ?? ?????????? ?????? ???????????? ?????????????????? ???????????? ? ????????? ??????? ? ?????? ????????????? ???????????????? ???.} }