Morozova, Nadezhda. “Old Believers through the Eyes of Representatives of Other Christian Denominations in the Polish-Lithuanian Commonwealth: Jesuit Jan Aloysius Kulesha”. Slavistica Vilnensis, vol. 65, no. 2, Dec. 2020, pp. 54-64, https://doi.org/10.15388/SlavViln.2020.65(2).47.