1. Confidential Information Agreement with Dr. Woodrow Clark, November 2, 2012.
2. Bloom, 2010: http://www.bloomenergy.com/fuel-cell/solid-oxide/.
3. California Energy Commission (CEC) Hydrogen Refueling, 2014: www.arb.ca.gov/hydrogen.
4. Agile Energy Systems: Global Solutions to the California Energy Crisis;Clark,2004