1. Validity limits of carbon tetrachloride as an ocean tracer
2. A comparative study of the gas exchange potential between three wetland species using sulfur hexafluoride as a tracer
3. Noble gases, stable isotopes, and radiocarbon as tracers of flow in the Dakota aquifer, Colorado and Kansas
4. Kleven , R. , Hovring , O. , Opdal , S.T. , Norway , S. , Bjornstad , T. , Dugstad , O. and Hundere , I.A.Non-radioactive tracing of injection gas in reservoirs. Gas Technology Conference .
5. McCallum , S.D. , Riestenberg , D.E. , Cole , D.R. , Freifeld , B.M. , Trautz , R.C. , Hovorka , S.D. and Phelps , T.J.Monitoring geologically sequestered CO2during the Frio Brine Pilot Test using perfluorocarbon tracers. Fourth Annual Conference On Carbon Capture and Sequestration DOE/NETL .