The origin and activity of Yelets autocephaly in Orel diocese in the early 1920s: a history of resistance to the Renovationist Schism in the Russian Orthodox Church - Timofey Balyko (Вестник Православного Свято-Тихоновского гуманитарного университета: Серия ИИ. История, история Русской Православной Церкви, 2024)