Anand P, Athira, and Ram Krishan Sharma. “Analytical Theory in Terms of J2, J3, J4 With Eccentric Anomaly for Short-Term Orbit Predictions Using Uniformly Regular KS Canonical Elements”. International Journal of Advanced Astronomy, vol. 7, no. 1, May 2019, pp. 1-10, https://doi.org/10.14419/ijaa.v7i1.17241.