Sumsʹkyj viddil Sojuzu 17 žovtnja formuvannja ta dijalʹnistʹ (1905-1914 rr.) = The Sumy section of the Union of 17 October : formation and Activity (1905-1914) - Kudinov, Dmytro Valerijovyč ca. 20./21. Jh; Parchomenko, Vladyslav Anatolijovyč 1974- (2022)