1. S.Satyapal , U.S. Department of Energy, Hydrogen and Fuel Cells Program, Annual Merit Review and Peer Evaluation Meeting (2018) Proceedings, and references therein available at https://www.energy.gov/sites/prod/files/2018/10/f57/01_satyapal_plenary_2018_amr_0.pdf
2. U.S. Department of Energy H2@Scale Initiative website and references therein, https://www.energy.gov/eere/fuelcells/h2-scale
3. https://www.energy.gov/eere/fuelcells/hydrogen-storage
4. Hydrogen storage: Materials, methods and perspectives
5. https://www.energy.gov/eere/fuelcells/downloads/executive-summaries-hydrogen-storage-materials-center-excellence-chemical