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2. Metals Handbook (1948) p. 21, ASM. Cleveland.
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4. W. Hume-Rothery and G. V. Raynor: The Apparent Sizes of Atoms in Metallic Crystals with Special Reference to Aluminum and Indium and the Electronic State of Magnesium. Proc. Royal Society, London (1941) 177, pp. 27–37.
5. W. Hume-Rothery: Atomic Theory for Students of Metallurgy. Inst, of Metals, Monograph and Report Series No. 3 (1947) p. 213.