Mukerji, S. “On Two Undescribed Forms of the Genus Oligotoma With a Description of the External Genitalia of Oligotoma Michaeli and Distributional Records of Some Indian Forms”. Records of the Zoological Survey of India, vol. 37, no. 1, Jan. 1934, pp. 1-9, doi:10.26515/rzsi/v37/i1/1935/162999.