Bolgov, Nikolai N., Anna M. Bolgova, Marina L. Ryabtseva, Marina Yu. Lopatina, and Elena A. Semecheva. 2017. “An Investigation on an Early Byzantine Higher School in Russian Historiography”. Journal of History Culture and Art Research 6 (4):268-76. https://doi.org/10.7596/taksad.v6i4.1171.