Citation: Mm. Kraml et F. Dicosmo, A RAPID HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC METHOD FOR THE SEPARATION OF THE ALKALOID PRECURSOR L-TYROSINE AND 6 TETRAHYDROISOQUINOLINEALKALOIDS OF PAPAVER-SOMNIFERUM, Phytochemical analysis, 4(3), 1993, pp. 103-104