Ryko, Anastasiia. “Letters of Peter Torchakov from the Second Half of the 17th Century: Themes and Graphic Features”. Slavistica Vilnensis 69, no. 2 (February 20, 2025): 41–57. Accessed November 16, 2025. https://www.zurnalai.vu.lt/slavistica-vilnensis/article/view/37198.