Title: Bashkirskai︠a︡ neftʹ i ee pervoprokhodt︠s︡y (XVIII-XX vv.).
Authors: Zaĭnetdinov, Ė. A.; Mikhaĭlov, D. I.
Publisher: Bashkirskai︠a︡ ėnt︠s︡iklopedii︠a︡,
Year: 2017