1. La actividad del volcán Rincón de la Vieja, Heredia, Costa Rica;Barquero;Bol. Vulcanol.,1983
2. Les éruptions de 1966–1970 et 1991–1992 du volcan Rincón de la Vieja, Costa Rica: exemple d'activité récurrente d'un systéme hydromagmatique;Boudon;C.R. Acad. Sci. Paris,1996
3. Rocas piroclasticas asociadas con la formacion de la caldera de Guayabo, Cordillera de Guanacaste, Costa Rica;Chiesa;Rev. Geol. Am. Central,1992
4. Ruapehu crater lake chemistry November 1970–December 1990: evolution of a vent hosted hydrothermal system;Christensen;Bull. Volcanol.,1993
5. Geochemistry, mineralogy, and chemical modeling of the acid crater lake of Kawah Ijen Volcano, Indonesia;Delmelle;Geochim. Cosmochim. Acta,1994