D., R., and V. Haripriya. “Comparative Study of Efficacy of Nifedipine, Nitroglycerin Dermal Patches and Isoxsuprine As Tocolytic Agents in Suppression of Preterm Labour 1-Year Study at Navodaya Medical College Hospital and Research Centre Raichur”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 10, no. 7, June 2021, pp. 2806-10, doi:10.18203/2320-1770.ijrcog20212672.