1. Preparing for the hydrogen economy by using the existing natural gas system as a catalyst. NATURALHY; 2010. p. 68.
2. European funded research on fuel cells and hydrogen: review, assessment and future outlook. In: Hydrogen and fuel cell review days; 2007. p. 47.
3. Basic research needs for the hydrogen economy: report on the basic energy science workshop on hydrogen production, storage, and use. U.S. Department of Energy, Office of Science; 2004. p. 178.
4. The use of the natural-gas pipeline infrastructure for hydrogen transport in a changing market structure;Haeseldonckx;Int J Hydrogen Energy,2007
5. Hoover WR, Robinson SL, Stoltz RE, Spingarn JR. Hydrogen compatibility of structural materials for energy storage and transmission. Final report. Livermore, CA, USA: Sandia National Labs.; 1981. p. 64.