Pradhan, R. K., S. Gautam, M. S. Paudel, and P. R. Kafle. “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”. Journal of Nepal Physical Society, vol. 7, no. 3, Dec. 2021, pp. 72-76, doi:10.3126/jnphyssoc.v7i3.42515.