Old Slavonic
Ivan S. Dobrovolsky. HARD ENDINGS INSTEAD OF SOFT ENDINGS IN NEW CHURCH SLAVONIC AND OLD CHURCH SLAVONIC GREEKISMS
Trudy IRY RAS. 2023. № 1 (35), Pages. 91 - 101
Elizaveta G. Sosnovtseva. THE GRAMMATICAL ANALYSIS OF CONSTRUCTIONS byvaet WITH PASSIVE PARTICIPLES IN RUSSIAN HAGIOGRAPHY
Trudy IRY RAS. 2016. № 4 (10), Pages. 516 - 525