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M. M.  Schepman, ?The Mollusca of the Dutch Scientific Borneo-Expedition?, Notes from the Leyden Museum, vol. 17, pp. 145-162, 1896.

E.  von Martens, ?Beschreibung einiger im östlichen Borneo von Dr. Martin Schmidt gesammelten Land und Süßwasser-Conchylien.?, Mitteilungen aus dem Zoologischen Museum, vol. 4, pp. 251-291, 1908.