1. Barnes, C.J. and Allison, G.B., 1983. The distribution of deuterium and 18O in dry soils. 1. Theory. J. Hydrol., 60: 141–156.
2. Bribiesca, C.L., 1960. Hidrologia historica del Valle de Mexico. Rev. Ing. Hidraul. Mex., XIV (3).
3. Carrillo, N., 1947. Influence of artesian wells in the sinking of Mexico City. In: Volumen Nabor Carrillo, Comision Impulsora y Coordinadora de la Investigacion Cientifica, Anuario 47. Secretaria de Hacienda y Credito Publico, Mexico City, 1969, pp. 7–14.
4. Cortes, A. and Farvolden, R.N., 1989. Isotope studies of precipitation and groundwater in the Sierra Las Cruces, Mexico. J. Hydrol., 107: 147–153.
5. Craig, H., 1961. Isotopic variations in meteoric water, Science, 133: 1702–1703.