Афанасьевна Морозова, Н., & Чекмонас, В. (2002). Pious Followers of the Old Faith Near Opočka (Some Socio- and Ethnolinguistic Notes). Slavistica Vilnensis, 51(2), 93–116. https://test.zurnalai.vu.lt/slavistica-vilnensis/article/view/26845