Khanal, S. P., B. Poudel, R. P. Koirala, and N. P. Adhikari. “Solvation Free Energy of Protonated Lysine: Molecular Dynamics Study”. Journal of Nepal Physical Society, vol. 7, no. 2, Aug. 2021, pp. 69-75, doi:10.3126/jnphyssoc.v7i2.38625.