aorist
Maria N. Sheveleva. Once more on the Perfect and Aorist in Early East Slavic texts
RJANO. 2020. № 2 (40), Pages. 151 - 184
Yana A. Penkova. The Slavic future anterior and its Greek correspondences in translated medieval Church Slavonic monuments
RJANO. 2018. № 2 (36), Pages. 9 - 35