Saputro, M. I. A., and M. F. Qudratullah. “Estimation of Zero-Inflated Negative Binomial Regression Parameters Using the Maximum Likelihood Method (Case Study: Factors Affecting Infant Mortality in Wonogiri in 2015)”. Proceeding International Conference on Science and Engineering, vol. 4, Feb. 2021, pp. 240-54, http://sunankalijaga.org/prosiding/index.php/icse/article/view/666.