Gowri Sankar, D., et al. “1,10-Phenanthroline As an Analytical Reagent for the Estimation of Cefepime and Repaglinide”. Asian Journal of Chemistry, vol. 17, no. 2, Jan. 2016, pp. 1360-2, https://asianpubs.org/index.php/ajchem/article/view/14301.