@book{zu230957,
          number = {7},
          editor = {?. ?. ?????????? and ?. ?. ?????????},
           title = {????????? ??????. ?????? 7},
         address = {???????},
       publisher = {??-? ????????? ?. ?.},
            year = {2018},
             url = {http://eprints.zu.edu.ua/30957/}
}