Lotfy, H.M. et al. 2013. Simultaneous determination of Simvastatin and Sitagliptin in tablets by new univariate spectrophotometric and multivariate factor based methods. European Journal of Chemistry. 4, 4 (Dec. 2013), 414–421. DOI:https://doi.org/10.5155/eurjchem.4.4.414-421.829.