2011 · USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO), David Greene, et al. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 12
1992 · Oak Ridge National Lab., TN (United States), D Greene, et al. · OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) · 2