W. S. Svan Benthe Jutting, ?Systematic studies on the non-marine Mollusca of the Indo-Australian Archipelago?, Treubia, vol. 23, pp. 259-477, 1956.

W. S. Svan Benthe Jutting, ?Systematic studies on the non-marine Mollusca of the Indo-Australian Archipelago?, Treubia, vol. 20, pp. 381-505, 1950.