“…In spite of the large amount of analytical and numerical work in CR3BP, there are relatively a few analytical results in ER3BP. The stability of the infinitesimal around the triangular equilibrium points in the elliptical restricted three body is "described in considerable details by Grebenikov [1], Danby [3], Bennet [4], Rabe [5], [6], Meire [7], Markeellos [8], Roberts [9], Zimvoschikov and Thakai [10], Ammar [11]". The linear stability of elliptic Lagrange orbits in ER3BP by numerical integration technique has been "studied by Danby [3]".…”