作 者:Vera Tiesler, Universidad Autonoma de Yucatan Facultad de Ciencias Anthropologicas, Mérida, Yucatán, Mexico; Andrea Cucina, Universidad Autonoma de Yucatan Facultad de Ciencias Anthropologicas, Mérida
作 者:Peter Diggle, University Lancaster Dept. Mathematics, Lancaster, UK; Paulo Justiniano Ribeiro, Universidade Federal do Paraná Depto. Estatística, Curitiba, Brazil
作 者:Richard H. Enns, Simon Fraser University, Burnaby, BC, Canada; George C. McGuire, University College of the Fraser Valley Dept. Physics, Abbotsford, BC, Canada