Sarhan Mahmoud Abd El-kareem, Mamoun, et al. “Structural Investigation of Sparfloxacin Drug Using Mass Spec-Trometry and MNDO Semi-Empirical Molecular Orbital Calcu-Lations”. International Journal of Advanced Chemistry, vol. 6, no. 1, Mar. 2018, pp. 74-78, https://doi.org/10.14419/ijac.v6i1.9177.