Koncepcija Ukraïnsʹkoï revoljuciï 1917-1921 rokiv u tekstach polʹsʹkych istorykiv stavlennja, tradycija ta istoriohrafičnyj kanon = The vision of the Ukrainian revolution (1917-1921) in researches of Polish historians : position, tradition and historiographical canon - Korolʹov, Hennadij Oleksandrovyč 1983- (2016)