Evidence for crustal degassing of CF4 and SF6 in Mojave Desert groundwaters." Geochimica et Cosmochimica Acta 72, no. 4 (2008): 999-1013."
Tectonic activity as a significant source of crustal tetrafluoromethane emissions to the atmosphere: Observations in groundwaters along the San Andreas Fault." Earth and Planetary Science Letters 412 (2015): 163-172."