@book{zu26037,
           title = {??????? ??????????? ?? ????'?????.  ????????  
???????? "Sonar"},
          author = {?. ?. ???????},
         address = {???????},
       publisher = {???-?? ??? ??. ????? ??????},
            year = {2005},
        keywords = {??????????? ?? ????'?????, ???????? ???????? "Sonar"},
             url = {http://eprints.zu.edu.ua/6037/},
        abstract = {?????????-?????????? ???????? ?? ????? "??????? ??????????? ?? ????'?????"}
}