↑ Dvornik, Francis (1956). The Slavs: Their Early History and Civilization. Boston: American Academy of Arts and Sciences. tr. 179. The Psalter and the Book of Prophets were adapted or "modernized" with special regard to their use in Bulgarian churches, and it was in this school that glagolitic writing was replaced by the so-called Cyrillic writing, which was more akin to the Greek uncial, simplified matters considerably and is still used by the Orthodox Slavs.
↑ Columbia Encyclopedia, Sixth Edition. 2001–05, s.v. "Cyril and Methodius, Saints"; Encyclopædia Britannica, Encyclopædia Britannica Incorporated, Warren E. Preece – 1972, p. 846, s.v., "Cyril and Methodius, Saints" and "Eastern Orthodoxy, Missions ancient and modern"; Encyclopedia of World Cultures, David H. Levinson, 1991, p. 239, s.v., "Social Science"; Eric M. Meyers, The Oxford Encyclopedia of Archaeology in the Near East, p. 151, 1997; Lunt, Slavic Review, June 1964, p. 216; Roman Jakobson, Crucial problems of Cyrillo-Methodian Studies; Leonid Ivan Strakhovsky, A Handbook of Slavic Studies, p. 98; V. Bogdanovich, History of the ancient Serbian literature, Belgrade, 1980, p. 119
↑ А. Н. Стеценко. Хрестоматия по Старославянскому Языку, 1984.
