A report on Old Church Slavonic

The Euchologium Sinaiticum (scholarly abbreviation: Eu or Euch) is a 109-folio Old Church Slavonic euchologion in Glagolitic script.

Codex Assemanius (scholarly abbreviation Ass) is a rounded Glagolitic Old Church Slavonic canon evangeliary consisting of 158 illuminated parchment folios, dated to early 11th century.

The Codex Suprasliensis is a 10th-century Cyrillic literary monument, the largest extant Old Church Slavonic canon manuscript and the oldest Slavic literary work in Poland.

Leskien is also the author of Handbuch der altbulgarischen Sprache, a guide to Old Church Slavonic (3rd ed.

The medieval literature was mostly written in Old Church Slavonic and its recensions, but most of the 19th century works were written in some of the dialects of Montenegro.

The Psalterium Sinaiticum (scholarly abbreviations: Psa or Ps. sin.) is a 209-folio Glagolitic Old Church Slavonic canon manuscript, the earliest Slavic psalter, dated to the 11th century.

The schools' emphasis on Christian scriptures made the Bulgarian Empire a centre of Slavic culture, bringing Slavs under the influence of Christianity and providing them with a written language.

Sava's book (Савина книга, Savina kniga; Саввина книга, Savvina kniga) is a 129-folio Cyrillic Old Church Slavonic canon evangeliary, written in the eleventh century.

Use of genitive for negation is obligatory in Slovene, Polish and Old Church Slavonic.

During the rule of Pribina and Kocel, capital of the Principality of Lower Pannonia was Mosapurc (Mosapurc regia civitate), also known in Old-Slavonic as Blatnograd (modern Zalavár near Lake Balaton).