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Popova, S.M.; Schileyko, A.A. (1981). Novyy podrod roda Vertigo (Gastropoda: Vertiginidae) iz neogena o. ol'khon (Baykal) i Tuvy [A new subgenus of the genus Vertigo (Gastropoda: Vertiginidae) from the Neogene of Olkhon island (Baikal) and Tuva]. Byulleten' Moskovskogo Obshchestva Ispytateley Prirody, otdel geologicheskiy. 56(3): 112-115.
Popova, S.M.; Schileyko, A.A. (1981). Novyy podrod roda Vertigo (Gastropoda: Vertiginidae) iz neogena o. ol'khon (Baykal) i Tuvy [A new subgenus of the genus Vertigo (Gastropoda: Vertiginidae) from the Neogene of Olkhon island (Baikal) and Tuva]. Byulleten' Moskovskogo Obshchestva Ispytateley Prirody, otdel geologicheskiy. 56(3): 112-115.
