Ong, J. C. ., A. . A. Omar, and W. . Asrar. “A BGK-Based Two-Equation Turbulence Model Algorithm for Solving Compressible Navier-Stokes Equations”. CFD Letters, vol. 6, no. 2, Jan. 2021, pp. 46-61, https://akademiabaru.com/submit/index.php/cfdl/article/view/3304.