Aloraini, Najla, and Sanjoy Sinha. “Approximate Methods for Analyzing Semiparametric Longitudinal Models With Nonignorable Missing Responses”. Journal of Statistical Research 56, no. 2 (July 9, 2023): 155–183. Accessed April 15, 2025. https://banglajol.info/index.php/JStR/article/view/67468.