1. Chayes, F., 1949, On correlation in petrography: J. Geol., v. 57, p. 239–254.
2. Chayes, F., 1971, Ratio correlation: Chicago, University of Chicago Press.
3. Pearson, K., 1896–1897, On a form of spurious correlation which may arise when indices are used in the measurements of organs: Proc. Roy. Soc. (London), v. 60, p. 489–502.
4. Tukey, J. W., undated, The propagation of errors, fluctuations and tolerances: Unpublished Technical Reports No. 10, 11, 12, Princeton University.