Mohammed Kamil, Osamah, et al. “Synthesis, Quantification and Characterization of 1,3,4-Thiadiazole Derivatives of Ampicillin by HPLC”. Journal of Kufa for Chemical Sciences, vol. 3, no. 1, Dec. 2023, pp. 61-75, doi:10.36329/jkcm/2023/v3.i1.11535.