1. Baillie MN, Hogan JF, Ekwurzel B, Wahi AK, Eastoe CJ (2007) Quantifying water sources to a semiarid riparian ecosystem, San Pedro River, Arizona. J Geophys Res 112:G03S02
2. Bartnik SR, Hampton BA, Mack GH (2019) U-Pb detrital geochronology and provenance comparisons from the nonmarine strata of the Dakota group, Lytle sandstone, and Morrison formation in northeastern New Mexico. In: Ramos FC, Zimmerer MJ, Zeigler KE, Ulmer-Scholle DS (eds) Geology of the Raton-Clayton Area. New Mexico Geological Society Guidebook, 70th Field Conference, NM Geol. Soc., Socorro, NM, pp 55–65
3. Becker MF, Bruce BW, Pope LM, Andrews WJ (2002) Ground-water quality in the central High Plains Aquifer, Colorado, Kansas, New Mexico, Oklahoma, and Texas, 1999. US Geol Surv Water Resour Invest Rep 2002-4112
4. Chen Z, Nie Z, Zhang G, Wan L, Shen J (2006) Environmental isotopic study on the recharge and residence time of groundwater in the Heihe River basin northwestern China. Hydrogeol J 14:1635–1651
5. Clark ID, Fritz P (1997) Environmental isotopes in hydrogeology. Lewis, Boca Raton, FL