1. Federal Energy Regulatory Commission. Current state of and issues concerning underground natural gas storage (2004)
2. B.D. James, Overview of Hydrogen Storage Technologies (Directed Technologies, Inc., Arlington)
3. Onboard type IV compressed hydrogen storage system-cost and performance status 2015, DOE Hydrogen and Fuel Cells Program Record #: 15013, Dated: 9/30/2015, Update to: 13010, Originated by Grace Odaz, Cassidy Hochins, and Thanh Hua
4. https://www.energy.gov/eere/fuelcells/downloads/recommended-best-practices-characterization-storage-properties-hydrogen-0
5. https://www.energy.gov/eere/fuelcells/hymarc-hydrogen-materials-advanced-research-consortium