Hegedus, H., András Gergely, T. Veress, and Ferenc Zsila. (1999) 1999. “Determination Of The Enantiomeric Purity Of Amphetamine After Derivatization With Sanger S Reagent (2,4-Dinitrofluorobenzene [Dnfb]) By Simultaneous Dual Circular Dichroism And Ultraviolet Spectroscopy”. Fresenius Journal Of Analytical Chemistry 364: 749-752. http://www.scopus.com/inward/record.url?eid=2-s2.0-0006671790&partnerID=40&md5=0525f1ea2dc3f96c2f69c2eca6471dc4.