Kovalenko, Anton. “Homily for the Nativity of Our Lord Jesus Christ in a Sixteenth-Century Codex: The Problem of the Authorship of Spyridon, Metropolitan of Kyiv”. Quaestio Rossica, Vol. 10, No. 4, Nov. 2022, P. 1438–1449, doi:10.15826/qr.2022.4.739.