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- [1] EXPERIMENTAL-DETERMINATION OF ISOTOPIC FRACTIONATION OF C-13 AND C-14 DURING NATURAL PROCESSES INTERNATIONAL JOURNAL OF APPLIED RADIATION AND ISOTOPES, 1984, 35 (01): : 55 - 62
- [4] AUTOMATED MEASUREMENT OF C-13 ENRICHMENT IN CARBON-DIOXIDE DERIVED FROM SUBMICROMOLE QUANTITIES OF L-(1-C-13)-LEUCINE BIOMEDICAL AND ENVIRONMENTAL MASS SPECTROMETRY, 1988, 15 (07): : 369 - 374
- [8] NEW SYSTEMATIC DEGRADATION OF NICOTINE TO DETERMINE ACTIVITY AT C-2' AND C-5' - PATTERN OF LABELING IN NICOTINE AND NORNICOTINE FORMED FROM [2-C-14]ORNITHINE IN NICOTIANA-GLUTINOSA, AND IN NICOTINE OBTAINED FROM NICOTIANA-TABACUM EXPOSED TO [C-14,C-13]CARBON DIOXIDE JOURNAL OF ORGANIC CHEMISTRY, 1976, 41 (21): : 3438 - 3441