00680naa#a2200169#i#450# EN\RIOR\bibl\16618 20241118053935.1 2409-5087 20170718b2017####ek#y0engy0150####ca RU The institutionalization of interstate relations between Russia and Ukraine in the first third of the 20th century in the context of contemporary geopolitical conflict in the South-East of Ukraine Journal article Moscow Publishing Center RIOR 2017 10 с. Journal article local Международное частное право. 10.89 grnti Galas Marina Leonidovna naukaru.ru