GÜLFEN, Mustafa; CANBAZ, Yazgı; ÖZDEMIR, Abdil. Ratio - First Order Derivative - Zero Crossing UV-Visible Spectrophotometric Method for Analysis of Amoxicillin, Levofloxacin and Lansoprazole Mixture. Pakistan Journal of Analytical & Environmental Chemistry, [S.l.], v. 21, n. 1, p. 34-43, june 2020. ISSN 2221-5255. Available at: <https://pjaec.pk/index.php/pjaec/article/view/570>. Date accessed: 14 june 2021. doi: http://dx.doi.org/10.21743/pjaec/2020.06.05.