Ural i problemy regionalʹnoĭ istoriografii. informa︠t︡sionnye materialy - Gavrilov, D. V. (Dmitriĭ Vasilʹevich); Alla︠i︡arova, Vera Stepanovna; Olʹkhova︠i︡a, L. V. (UN︠T︡S AN SSSR, 1986)