Affiliation: | 1. Department of Metallurgy and Materials Engineering, Instituto Politecnico Nacional-ESIQIE, Mexico City, D.F, CP. 07338, Mexico 2. Foseco Metallurgical, Inc., Cleveland, OH, 44142, USA 3. Foseco Industrial e Comercial Ltda, S?o Paulo, 05575000, Brazil 4. Foseco Morval, Inc., Guelph, ON, N1H 1C7, Canada 5. K & E Technologies, Fdo. Amilpa And. 8 No. 7, Col. El Risco CTM, Mexico City, D.F., CP. 07090, Mexico
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