Mitra, Bulganin, et al. “A Report on Flies (Diptera: Insecta) As Flower Visitors and Pollinators of Kolkata and it’s Adjoining Areas”. Records of the Zoological Survey of India, vol. 105, no. 3-4, Dec. 2005, pp. 3-20, doi:10.26515/rzsi/v105/i3-4/2005/159227.