1. Geothermal Survey of Northern California, Portfolio Map Area 23, 1:1,000,000;AAPG,1978
2. Franciscan and related rocks, and their significance in the geology of western California;Bailey;California Div. Mines Bull. 183,1964
3. Nitrogen;Baur,1972
4. Natural gases of North America—a summary;Beebe,1968
5. Origin of nitrogen-methane gas and anomalously high fluid pressures, Sacramento valley, California (abstr.);Berry;AAPG Bull.,1965