Thakur, B., B. Ghosh, N. Puri, R. Bansal, S. Yadav, and R. K. Sharma. “A Comparative Study of Lip Print Patterns in Monozygotic and Dizygotic Twins”. International Journal of Research in Medical Sciences, vol. 5, no. 5, Apr. 2017, pp. 2144-9, doi:10.18203/2320-6012.ijrms20171859.