“Simultaneous Determination of Paracetamol and Hyoscine-N- Butyl Bromide in Binary Mixture Using Derivative Spectrophotometry and Their Application for Pharmaceutical Samples”.
Al-Nahrain Journal of Science, vol. 19, no. 1, May 2018, pp. 56-68,
https://mail.anjs.edu.iq/index.php/anjs/article/view/254.