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2. H. Masumoto: Sci. Rep. Tohoku Imp. Univ., 20 (1931), 101.
3. 2) M. Yamamoto: J. Japan Inst. Metals, 4 (1940), 368.
4. 3) On predominant direction of growth, M. Yamamoto: J. Japan Inst. Metals, 4 (1940), 27;
5. On predominant direction of growth, M. Yamamoto: J. Japan Inst. Metals, 4 (1940), 168;