Iddi, Samuel, and Kwabena Doku-Amponsah. “Statistical Model for Overdispersed Count Outcome With Many Zeros: An Approach for Direct Marginal Inference”. South African Statistical Journal 50, no. 2 (September 30, 2016): 313–337. Accessed April 3, 2026. https://www.journals.ac.za/index.php/sasj/article/view/5258.