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Paramonov, A. A. (1926). Anatomische und Systematische Beiträge zur Kenntniss der Freilebenden Nematoden; Data on the Anatomy and Classification of Free-Living Nematodes (Materialy k Anatomii i Sistematike Svobodnykh Nematod). Revue Zoologique Russe; Russkii Zoologicheskii Zhurnal, 6: 44-56, Translation 1-14.