Ufimskiĭ amfiteatr - Smirnov, G. A. (Georgiĭ Alekseevich) (Trudy Gorno-geologicheskogo instituta (Gorno-geologicheskiĭ institut (Akademi︠i︡a nauk SSSR. Uralʹskiĭ filial)) ;, 1956)