1. Steel for Hydrogen Service at Temperatures and Pressures in Petroleum Refineries and Petrochemical Plants, API Publ. 941, 1977.
2. D. A. Westphal and F. J. Worzala:Hydrogen in Metals, I. M. Bernstein and A. W. Thompson, eds., pp. 79–89, ASM, Metals Park, OH, 1974.
3. M. Natan: Ph.D. Thesis, Cornell University, Ithaca, NY, 1979.
4. G. Sundararajan and P. G. Shewmon:Met. Trans. A, 1980, vol. 11 A, pp. 509–16.
5. J. F. Mancuso: Ph.D. Thesis, pp. 121–45, Cornell University, Ithaca, NY, 1977.