Hong JM-K, Quita RM. Approximation of generalized Riemann solutions to compressible Euler-Poisson equations of isothermal flows in spherically symmetric space-times. Tamkang J. Math. [Internet]. 2017 Mar. 30 [cited 2024 Apr. 26];48(1):73-94. Available from: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2274