Mangang, Chanambam Rajiv, and Kshetrimayum Anand Singh. “Parametric Models for First Birth Interval in North-East India: Identifying A Suitable Model”. National Journal of Community Medicine 16, no. 12 (December 1, 2025): 1213–1220. Accessed December 1, 2025. https://njcmindia.com/index.php/file/article/view/5927.