Zheng, X., & Palffy-Muhoray, P. (2007). Distance of Closest Approach of Two Arbitrary Hard Ellipses in Two Dimensions (1–). Physical Review E. https://doi.org/10.1103/PhysRevE.75.061709
Zheng, Xiaoyu, and Peter Palffy-Muhoray. 2007. “Distance of Closest Approach of Two Arbitrary Hard Ellipses in Two Dimensions”. Physical Review E. https://doi.org/10.1103/PhysRevE.75.061709.
Zheng, Xiaoyu, and Peter Palffy-Muhoray. Distance of Closest Approach of Two Arbitrary Hard Ellipses in Two Dimensions. Physical Review E, 1 June 2007, https://doi.org/10.1103/PhysRevE.75.061709.