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Rogozin, A.G. (2017). Olisthanella obtusa (Schultze, 1851) and opistomum arsenii Nasonov, 1917, two species of typhloplanoid Turbellaria (Neorhabdocoela) new to the fauna of the Urals. Zoologicheskii Zhurnal. 96(11): 1319–1322.