thammavej, P., J. Ratanapisit, and K. Prasertsit. “Stability of Symplectic Integrators in Molecular Dynamics Simulations”. Engineering and Applied Science Research, vol. 37, no. 2, May 2012, pp. 121-30, https://ph01.tci-thaijo.org/index.php/easr/article/view/1697.