Evoljucija dyplomatyčnych vidnosyn miž UNR i Polʹsʹkoju Respublikoju vid ustanovlennja do rozryvu (lystopad 1918 - berezenʹ 1921 rr.) = Evolution of diplomatic relations between the Ukrainian People's Republic and the Polish Republic : from establishment to break (November 1918 - March 1921) - Tymčenko Roman Viktorovyč ca. 20./21 Jh (2024)