Opredelitelʹ fauny ordovika zapadnogo sklona Srednego Urala - Ivanov, A. N. (Alekseĭ Nikolaevich), 1869-1958 (Trudy Gorno-geologicheskogo instituta (Gorno-geologicheskiĭ institut (Akademi︠i︡a nauk SSSR. Uralʹskiĭ filial)), 1950)