Waseem Hassan, Sajid Rahman, and Amina Ara. “The Research Growth Rate (2019-2020) of Forty Countries in the Field of Earth and Planetary Science Research”. Proceedings of the Pakistan Academy of Sciences: A. Physical and Computational Sciences, vol. 61, no. 1, Mar. 2024, pp. 71-80, doi:10.53560/PPASA(61-1)818.