Atikankul, Yupapin, and Chanakarn Jornsatian. “The Negative Binomial-Bilal Distribution: Regression Model and Applications to Health Care Data”. Pakistan Journal of Statistics and Operation Research, vol. 21, no. 4, Dec. 2025, pp. 619-30, https://doi.org/10.18187/pjsor.v21i4.4566.