1. Maya Blue: A Clay-Organic Pigment?
2. M. Miller , National Geographic, February 1995, pp. 50–69. See also http://magma.nationalgeographic.com/ngm/0207/resources_geo2.html
3. Maya Blue Paint: An Ancient Nanostructured Material
4. L. A. Polette , N.Ugarte, M.José Yacamán and R.Chianelli, Scientific American Discovering Archaeology, July–August 2000, pp. 46–53
5. G. Chiari , R.Giustetto, C.Reyes-Valerio and G.Richiardi, poster presented at the XXX Congresso Associazione Italiana di Cristallografia, Martina Franca, Oct. 2000