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2. Approaches for achieving long-term accuracy and precision of δ18O and δ2H for waters analyzed using laser absorption spectrometers;Wassenaar;Environ. Sci. Technol.,2014
3. T. B. Coplen U.S. Geological Survey Open-File Report 00-345 2000 121 http://water.usgs.gov/software/code/geochemical/lims/doc/ofr00345.pdf
4. http://isotopes.usgs.gov/research/topics/lims.html http://www-naweb.iaea.org/napc/ih/IHS_resources_sampling.html#lims
5. http://en.wikipedia.org/wiki/Tektronix_405x