TY - SER AU - Zecevic,M. TI - Validation of a high-performance liquid chromatographic method for the simultaneous determination of tramadol and its impurities in oral drops as a pharmaceutical formulation KW - TRAMADOL KW - IF UR - http://lib3.dss.go.th/fulltext/abstract/C5/C5_40.pdf ISSN - 0021-9673 Sources - Journal of Chromatography A Sources - 1119 2006 : 251-256 ER -