Belyak (unit)

External links

• Maksum Akchurin, Andrey Belyakov (2017). "Mordvinian Belyaks and Tatar Princes" (PDF). Sh.Marjani Institute of History of Tatarstan Academy of Sciences Publ. Retrieved 2022-03-14.
• Mokshin, Nikolay (2013). "From The History Of The Christianisation Mordvinians based on Shatsky County". Sociopolitical Sciences No 2-13: 5–9. Retrieved 2022-03-15.
• Napolnikova, Polina (2015). "Owners of Tsna region in the Middle Ages". Tambov University Review. Series: Humanities. 10 (150). Tambov University Review: 79–85. doi:10.20310/1810-0201-2015-20-10-79-85. Retrieved 2022-03-15.