1. http://www1.eere.energy.gov/hydrogenandfuelcells/pdfs/iiia5_lessing.pdf – DOE Permeation Barrier Work
2. Effects of Gaseous Hydrogen on Fatigue Crack Growth in Pipeline Steel;Cialone;Metallurgical Transactions A,1985
3. Microstructural and Fractographic Features of Hydrogen-Accelerated Fatigue-Crack Growth in Steels;Cialone,1987
4. Sensitivity of Steels to Degradation in Gaseous Hydrogen;Cialone,1988
5. Hydrogen Effects on Conventional Pipeline Steels;Cialone,1984