1. Agostini S, Corti G, Doglioni C, Carminati E, Innocenti F, Tonarini S, Manetti P, Di Vincenzo G, Montanari D (2006) Tectonic and magmatic evolution of the active volcanic front in El Salvador: Insight into the Berlín and Ahuachapán geothermal areas. Geothermics 35:368–408.
2. Alarcón-Herrera MT, Martín-Domínguez IR, Trejo-Vázquez R, Rodríguez-Dosal S (2001a) Well water fluoride, dental fluorosis, bone fractures in the Guadiana Valley of Mexico. Fluoride 34:139–149.
3. Alarcón-Herrera MT, Flores-Montenegro I, Romero-Navar P et al. (2001b) Contenido de arsénico en el agua potable del valle del Guadiana, Mexico. Ing Hidraul Mex XVI:63–70.
4. Altamirano M (2005) Distribution of arsenic pollution in the groundwater of the South West basin of Sebaco valley-Matagalpa, Nicaragua. Proceedings Hydrogeology and Water Resources Management: Working together for the Future. March 2005, Managua.
5. Altamirano-Espinoza M, Bundschuh J (2009) Natural arsenic groundwater contamination of the sedimentary aquifers of southwestern Sébaco valley, Nicaragua. In J Bundschuh, MA Armienta, P Birkle, P Bhattacharya, J Matschullat, AB Mukherjee (eds) Natural arsenic in groundwaters of Latin America – Occurrence, health impact and remediation. London: Taylor and Francis Group.