Template:Ivanov & Mjagkova, 1950
- Ivanov, A.N. & Mjagkova, E.I. 1950. Определитель фауны ордовика западного склона Среднего Урала [Keys to the Ordovician fauna of the western slope of the Middle Urals]. Trudy Gorno-Geologicheskogo Instituta Ural'skogo Filiala Akademii Nauk SSSR 18: 1–32. (Russian) Google Books
