Warsono, Kurniasari D. On the Characteristic Function of the Four-Parameter Generalized Beta of the Second Kind (GB2) Distribution and Its Approximation to the Singh-Maddala, Dagum, and Fisk Distributions. sci. technol. indones. [Internet]. 2025 Jan. 1 [cited 2026 Apr. 19];10(1):201-1. Available from: https://www.sciencetechindonesia.com/index.php/jsti/article/view/1462