Lessios, Harilaos A. 2013. "Natural population density fluctuations of Echinoids. Do they help predict the future?." in Climate change perspectives from the Atlantic: past, present and future, edited by Fernandez-Palacios, Jose Maria, Nascimento, Lea de, Hernandez, Jose Carlos, Clemente, Sabrina, Gonzalez, Albano, and Diaz-Gonzalez, Juan P., 341–359. La Laguna, España.: Servicio de Publicaciones, Universidad de La Laguna.