Idrisi, M Javed, and Muhammad Amjad. 2015. “Effect of Elliptic Angle φ on the Existence and Stability of Libration Points in Restricted Three-Body Problem in Earth-Moon System Considering Earth As an Ellipsoid”. International Journal of Advanced Astronomy 3 (2): 87-96. https://doi.org/10.14419/ijaa.v3i2.5313.