1. Fuel Cell Technologies Office Multi-Year Research, Development, and Demonstration Plan Section 3.4 (US DOE, 2016).
2. Greene, D. L. & Duleep, G. Status and Prospects of the Global Automotive Fuel Cell Industry and Plans for Deployment of Fuel Cell Vehicles and Hydrogen Refueling Infrastructure (Office of Scientific and Technical Information, 2013).
3. Davis, P. Fuel Cell System Cost — 2002 vs 2005 DOE Hydrogen and Fuel Cells Program Record #5005 (US DOE, 2005).
4. James, B. D. Fuel Cell Vehicle and Bus Cost Analysis (2016);
http://go.nature.com/2f6K2Qc
5. James, B. D., Moton J. M. & Colella, W. G Mass Production Cost Estimation of Direct H2 PEM Fuel Cell Systems for Transportation Applications: 2014 Update (US DOE, 2014).