Srinivasa Rao, H. (1927) “Hibernation and Aestivation in Gastropod Molluscs - Note on Two Species of Aestivating Gastropod Molluscs from the Kangra Valley”, Records of the Zoological Survey of India, 29(2), pp. 50–56. doi: 10.26515/rzsi/v29/i2/1927/163217.