Comparison of micellar electrokinetic chromatography, liquid chromatography, and microbiologic assay for analysis of cephalexin in oral suspensions - Stepper, Martin; Aurora-Prado, Maria Segunda; Tavares, Marina Franco Maggi; Pinto, Terezinha de Jesus Andreoli; Kedor-Hackmann, Erika Rosa Maria; Santoro, Maria Inês Rocha Miritello (Journal of AOAC International, 2003)