Helicoprion (Parahelicoprion) clerci. (In Russian) Zap. Ural'skogo Obschestva Ljubitelej Estestvoznanija v gorode Sverdlovske, 39, p. 1–10.(In Russian.)

Helicoprion ivanovi n. sp. (In Russian) Bulletin de l'Académie des Sciences de Russie, 6. Sér., 16, 369–378

Remarks on the tooth segments of Edestidae and their orientation. (In Russian) Bulletin de l'Académie des Sciences de Russie, 6. Sér., 16, 379–388

On a new species of Helicoprion (Helicoprion clerci, n. sp.). (In Russian) Bulletin de l'Académie Impériale des Sciences de Saint Pétersbourg, 6. Sér., 10(9), 701–708

Notes on Helicoprion and other edestids. (In Russian) Izvestiya Imperatorskoy Akademii Nauk, 5: 1105–1122

Ueber die Reste von Edestiden und die neue Gattung Helicoprion. Verhandlungen der Kaiserlichen Russischen Mineralogischen Gesesllschaft zu St. Petersburg, 36(2): 1–111