by I͡A. G. Abdullin , F. I︠U︡ Gaffarova , literatury i istorii im. G. Ibragimova Institut i︠a︡zyka
Wilhelm Radloff
K. Sh Khusainov
Svetlana Alieva
International Scientific Conference The Abash Common Historical Culture: Genesis, Development, Heritage (2003 Cheboksary, Chuvashia, Russia)
Andreĭ Nikolaevich Kononov
Barbara Kellner-Heinkele