1. In-vivo nitrosation, precancerous lesions and cancers of the gastrointestinal tract. On-going studies and preliminary results;Bartsch,1984
2. Human exposure to endogenous N-nitroso compounds: quantitative estimates in subjects at high risk for cancer of the oral cavity, esophagus, stomach and urinary bladder;Bartsch;Cancer Surv.,1989
3. Total nitroso compounds in gastric juice;Bavin,1982
4. Screening of microorganisms for nitrosation catalysis at pH 7 and kinetic studies on nitrosamine formation from secondary amines by E. coli strains;Calmels;Carcinogenesis,1985
5. Nitrosation formation by microorganisms isolated from human gastric juice and urine; biochemical studies on the bacterial catalysed nitrosation,;Calmels,1987