1. Water as the source of oxidant and reductant in bacterial chemosynthesis;Aleem,1965
2. O2 and H2O are each the source of one O in NO−2 produced from NH3 by Nitrosomonas: 15N-NMR evidence;Anderson;FEBS-Lett.,1983
3. Identification de l'origine des nitrates dans quelques aquifères du bassin de Paris par traçage isotopique de l'azote;Blaison;Aqua,1985
4. Determination and isotope-ratio analysis of different forms of nitrogen in soils: 3. Exchangeable ammonium, nitrate, and nitrite by extraction-distillation methods;Bremner,1966
5. Nitrogen-isotope ratio of nitrate in ground water under fertilized fields, Long Island, New York;Flipse;Ground Water,1985