1. C.E. Ransley and H. Neufeld, J. Inst. Met.74, 599 (1948).
2. P.N. Anyalebechi, Light Metals 1991, 1025 (1991).
3. L.D. Ray, Light Metals 1992, 1031 (1992).
4. G.K. Sigworth, Light Metals 1993, 981 (1993).
5. NOTORP KYHS-A2 Hydrogen Analyzer for Molten Aluminium Alloys, Instruction Manual, TYK Corporation, Tokyo, Japan, 1997.