Киевские митрополиты между Русью и Ордой (вторая половина XIII в.) (Галимов) - страница 134

This study is the basis for raising the problem of the degree of involvement of the Old Russian nobility in the composition of the Golden Horde elites, the final resolution of which, sooner or later, will allow to declare the extent to which the Russian lands belong to the Golden Horde, which it really occupied.