Tvorčyj dorobok istoryka (do 80-riččja prof. Ja. S. Kalakury ta 55-riččja joho naukovo-pedahohičnoï dijalʹnosti) = Creative contribution of the historian : (to the 80th anniversary of professor Ya.S. Kalakura and the 55th anniversary of his research and pedagogical activity) - Jurij, Mychajlo Fedorovyč 1951- (2017)