Agrawal, M., and K. Bhatnagar. “Maternal Determinants Affecting Perinatal Mortality: A Multivariate Statistical Approach”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 6, no. 3, Feb. 2017, pp. 1052-6, doi:10.18203/2320-1770.ijrcog20170583.