Jain, P., H. Srivastava, N. Goel, F. Khaliq, P. Dewan, R. Sharma, and V. Bhartiya. “Effect of Antenatal Exercises on Pulmonary Functions and Labour Outcome in Uncomplicated Primigravida Women: A Randomized Controlled Study”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 4, no. 5, Feb. 2017, pp. 1478-84, doi:10.18203/2320-1770.ijrcog20150732.