Karya, U., V. Chauhan, and A. Rani. “To Assess Ovulation in Infertile Women Using Urinary Luteinizing Hormone Surge Kits Versus Transvaginal Ultrasonography”. International Journal of Reproduction, Contraception, Obstetrics and Gynecology, vol. 11, no. 1, Dec. 2021, pp. 114-9, doi:10.18203/2320-1770.ijrcog20215086.