Book Chapter
Ghosh, P.; Brand, W. A.: Isotopic analysis of CO
2 in air samples: Requirements for a new CO
2 in-air standard and preparation of an air-CO
2 reference mixture from calcite material. In: Proceedings of the 12th IAEA/WMO meeting of CO
2 experts, Toronto, Sept. 2003, pp. 50 - 57 (Eds. Worthy, D.; Huang, L.) (2005)