“Orbit of Galactic Globular Cluster of NGC 7089, NGC 7099, NGC 1851, Pal 1, and Pal 2 Around the Milky Way Galaxy Constructed from the Gaia EDR3” (2021) Journal of Nepal Physical Society, 7(3), pp. 72–76. doi:10.3126/jnphyssoc.v7i3.42515.