Solder, John E.; Beisner, Kimberly R.; Anderson, Jessica; Bills, Don J. (1 de agosto de 2020). «Rethinking groundwater flow on the South Rim of the Grand Canyon, USA: characterizing recharge sources and flow paths with environmental tracers». Hydrogeology Journal (em inglês). 28 (5): 1593–1613. Bibcode:2020HydJ...28.1593S. ISSN1435-0157. doi:10.1007/s10040-020-02193-z
Solder, John E.; Beisner, Kimberly R.; Anderson, Jessica; Bills, Don J. (1 de agosto de 2020). «Rethinking groundwater flow on the South Rim of the Grand Canyon, USA: characterizing recharge sources and flow paths with environmental tracers». Hydrogeology Journal (em inglês). 28 (5): 1593–1613. Bibcode:2020HydJ...28.1593S. ISSN1435-0157. doi:10.1007/s10040-020-02193-z
Solder, John E.; Beisner, Kimberly R.; Anderson, Jessica; Bills, Don J. (1 de agosto de 2020). «Rethinking groundwater flow on the South Rim of the Grand Canyon, USA: characterizing recharge sources and flow paths with environmental tracers». Hydrogeology Journal (em inglês). 28 (5): 1593–1613. Bibcode:2020HydJ...28.1593S. ISSN1435-0157. doi:10.1007/s10040-020-02193-z