SCRIPTA METALLURGICA, vol. 21, no. 11, page. 1595 - 1596, 1987-11
JOURNAL OF MATERIALS SCIENCE, vol. 22, no. 11, page. 3939 - 3948, 1987-11
CARBON, vol. 25, no. 4, page. 586 - 586, 1987-01
JOURNAL OF METALS, vol. 39, no. 7, page. A9 - A9, 1987-07
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