PIGIN, Alexander. Old Believer Letters of Request and Thanks during the Imperial Period. Quaestio Rossica, [S. l.], v. 8, n. 1, p. 176–189, 2020. DOI: 10.15826/qr.2020.1.455. Disponível em: https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.455. Acesso em: 23 apr. 2024.