A. P. Dass, N. Satyanarayan, and S. Rajappan, “Implementing Standardised Rhodes Index to measure the Efficacy of ginger extract (Zingiber officinale) in pregnancy induced nausea and vomiting”, Int J of Pharmc Res, vol. 5, no. 10, pp. 222–225, Oct. 2015, doi: 10.7439/ijpr.v5i10.2589.