Beheregaray Luciano B, Ciofi Claudio, Geist Dennis, Gibbs James P, Caccone Adalgisa, Powell Jeffrey R
Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520-8106, USA.
Science. 2003 Oct 3;302(5642):75. doi: 10.1126/science.1087486.