Korespondencija Jakova Orenštajna 1920-1930 rokiv z instytucijamy Druhoï Reči Pospolytoï ta Nimecʹkoho Rajchu jak džerelo do biohrafiï vydavcja = The correspondence of Jacob Orenstein of the 1920s-1930s to the institutions of the Second Polish Republic and the German Reich as a source for the publisher’s biography - Monolatij, Ivan Serhijovyč 1976- (2015)