USACHEV, Andrei. A New Look at the History of the Veneration of Prince Fyodor the Black. Quaestio Rossica, [S. l.], v. 8, n. 5, p. 1787–1794, 2020. DOI: 10.15826/qr.2020.5.558. Disponível em: https://qr.urfu.ru/ojs/index.php/qr/article/view/qr.558. Acesso em: 22 jul. 2024.