Rossijskie istoriki o kazačestve v konce XIX-načale XX vv. (popytki osmyslenija izmenenij v socialʹnoj strukture kazačʹich oblastej Rossijskoj imperii) = Russian historians about Cossacks in the late XIX-early XX centuries : (attempts of comprehending the changes in a social structure of Cossack regions in the Russian Empire) - Belousov, Igorʹ V. (2016)