1. Aitchison, J., 1986. The Statistical Analysis of Compositional Data: Chapman and Hall Ltd., London, (Reprinted in 2003 with additional material by The Blackburn Press), 416p.
2. Biplots for compositional data;Aitchison;J. Roy. Stat. Soc.: Ser. C (Appl. Stat.),2002
3. COCORP profiling across the Rocky Mountain front in southern Wyoming, Part 2: Precambrian basement structure and its influence on Laramide deformation;Allmendinger;Geol. Soc. Am. Bull.,1982
4. Anderson, C.C., Hinson, H.H., 1951. Helium-Bearing Natural Gases of the United States: Analyses and Analytical Methods. U.S. Bureau of Mines Bulletin 486, 141p.
5. Evolving geographic patterns of Cenozoic magmatism in the North American Cordillera: The temporal and spatial association of magmatism and metamorphic core complexes;Armstrong;Journal of Geophysical Research-Solid Earth,1991