[Blan99] Richard E Blanton, Gary M Feinman, Stephen A Kowalewski, and Linda M Nicholas. Ancient Oaxaca. . Cambridge University Press. 1999.

[Cat83] Ron Catterall and David A. Duddell. Beyond chi-square:  Evaluation of Parametric Models. 173-195. in Proceedings of a NATO Advanced Study Institute, St. Andrews, March 1980, published as. Robert Cundall. and. Robert E. Dale. eds. Time Resolved Fluorescence Spectrocopy in Biochemistry and Biology. Plenum Press. 1983.

[Flan96] Joyce Marcus and Kent V. Flannery. Zapotec Civilization. . Thames and Hudson. 1996.

[Gleick86] James Gleick. Chaos: Making a New Science. . Viking Penguin Inc.. 1986.

[May76] Robert May. Simple Mathematical Models with very Complicated Dynamics. Nature. 261 . 459-467. (1976).