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Betekhtina, O. A. (1965). Nekotoryye verkhnepaleozoyskiye peletsipody Tungusrkogo basseyna [Some Upper Paleozoic pelecypods of the Tunguska Basin]. In: Stratigrafiya i paleontologiya paleozoya Aziatskoy chasti SSSR [Stratigraphy and paleontology of the Paleozoic Asian part of the USSR]. Nauka, Moskva, pp. 99-128, pl. 1.
Betekhtina, O. A. (1965). Nekotoryye verkhnepaleozoyskiye peletsipody Tungusrkogo basseyna [Some Upper Paleozoic pelecypods of the Tunguska Basin]. In: Stratigrafiya i paleontologiya paleozoya Aziatskoy chasti SSSR [Stratigraphy and paleontology of the Paleozoic Asian part of the USSR]. Nauka, Moskva, pp. 99-128, pl. 1.
