Internet exhibition by the Russian National Library

[Oliver Gerlach]

Ostromir Gospel and the Manuscript Tradition of the New Testament Texts

http://www.nlr.ru/eng/exib/Gospel/

Have a look on the Glagolitic Zograf Gospel (11th-13th century):

http://www.nlr.ru/eng/exib/Gospel/slav/13.html

especially one on the notated chant books by N. Ramazanova:

"Old Russian Manuscripts of Vocal Music"

by C. Krushelnitskaya,
Head of the Old Russian Manuscripts Section of
the Manuscrips Department of
the National Library of Russia