FIRSOV, Sergei. Legend about Tsar’s Brother: Grand Duke Mikhail Aleksandrovich - Seraphim, Patriarch Solovetsky. State, Religion and Church, [S. l.], v. 28, n. 4, p. 209–225, 2010. Disponível em: https://state-religion-church.owebs.ru/article/view/10514. Acesso em: 8 nov. 2026.