1. Brower, J.C., and Merriam, D.F., 1990, Geological map analysis and comparison by several multivariate algorithms, in Statistical applications in the earth sciences: Geol. Survey of Canada Paper 89-9, p. 123-134.
2. Cole, V.B., 1962, Configuration of top Precambrian basement rocks in Kansas: Kansas Geol. Survey Oil and Gas Invest. No. 26, map.
3. Henderson, R.A., and Heron, M.L., 1977, A problematic method of paleobiogeographical analysis: Lethaia, v. 10, no. 1, p. 1–15.
4. Herzfeld, U.C., and Merriam, D.F., 1991, A map-Comparison technique utilizing weighted input parameters, in Computer applications in resource estimations: Pergamon Press, Oxford, p. 43–52.
5. Journel, A., and Huijbregts, C., 1978, Mining geostatistics: Academic Press, New York, 600 p.