1. www.cti.cl.
2. DIN 1623 Specification, Cold reduced sheet and strip technical delivery conditions, mild unalloyed steels for vitreous enamelling, Deutsche Norm, Deutsches Institut für Normung, 1987.
3. ASTM E8-88 Specification, Standard Test Methods for Tension Testing of Metallic Materials, Annual Book of ASTM Standards, American Society for Testing and Materials, 1988.
4. DIN 50145 Specification, Testing of metallic materials, Deutsche Norm, Deutsches Institut für Normung, 1988.
5. ASTM E646-00 Specification, Standard Test Method for Tensile Strain-hardening Exponents (n-values) of Metallic Sheet Materials, Annual Book of ASTM Standards, American Society for Testing and Materials, 2000.