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- [32] A micro-method for the determination of histidine, and especially a method for the separation of histidine and tyrosine. HOPPE-SEYLERS ZEITSCHRIFT FUR PHYSIOLOGISCHE CHEMIE, 1933, 222 : 3 - 5
- [33] HIGH-PERFORMANCE LIQUID-CHROMATOGRAPHIC SEPARATION OF CAFFEINE, THEOPHYLLINE, THEOBROMINE AND PARAXANTHINE IN RAT-BRAIN AND SERUM JOURNAL OF CHROMATOGRAPHY-BIOMEDICAL APPLICATIONS, 1991, 570 (01): : 185 - 190