Dubey, P., Gupta, N., Dwivedi, S., Swaroop, N., Lal, P. and Thawani, V. 2016. Hyperhomocysteinemia: a risk factor in unexplained infertility. International Journal of Reproduction, Contraception, Obstetrics and Gynecology. 2, 2 (Dec. 2016), 165–171.