TRAJDOS, Tadeusz Mikołaj. Metropolitans of Kiev Cyprian and Grzegorz Camblak (Bulgarian Orthodox priests) and the problems of Orthodox Church in the Polish-Lithuanian state during last years of 14th and first quarter of t15th centuries. Balcanica Posnaniensia. Acta et studia, [S. l.], v. 2, p. 211–234, 1985. DOI: 10.14746/bp.1985.2.16. Disponível em: https://pressto.amu.edu.pl/index.php/bp/article/view/54827. Acesso em: 4 oct. 2026.