Physicochemical or geochemical

• Martin-Del Pozzo, A. L., Aceves, F., Espinasa, R., Aguayo, A., Inguaggiato, S., Morales, P., Cienfuegos, E., (2002), Influence of volcanic activity on spring water chemistry at Popocatepetl Volcano, Mexico, Chemical Geology, 190(1-4), 207-229, 10.1016/S0009-2541(02)00117-1