Uncovering counterfeit viagra and cialis using portable NIR and UV-visible spectroscopy coupled with multivariate data analysis : a preliminary study
By: Ubaydat, Safwan M.; al-Tayyim, Ban. Jordan Journal of Chemistry. Vol. 9, no. 3 (Sep. 2014), pp.159-169, 11 p.
Subjects: Analytical chemistry; Light; Optics; Drugs; Spectrometers