LESZKA, Mirosław. Vladimír Vavřínek, "Cyril a Metoděj mezi Konstantinopolí a Římem" ["Cyril and Methodius between Constantinople and Rome"], Vyšehrad 2013, pp. 375. Studia Ceranea, Poland, v. 3, p. 235–236, 2013. DOI: 10.18778/2084-140X.03.24. Disponível em: https://www.czasopisma.uni.lodz.pl/sceranea/article/view/5464. Acesso em: 8 aug. 2026.