5POSCO Company. High Strength Hot Rolled Steel Sheet Containing High Manganese with Excellent Workability and Method for Manufacturing the Same: WIPO, WO2007/024092 [P]. 2007- 03- 01. http: //ep. espacenet, com/advancedSearch? locale = en_ EP.
6POSCO Company. High Manganese Steel Strips with Excellent Coatability and Superior Surface Property, Coated Steel Strips Using Steel Strips, and Method for Manufacturing the Steel Strips: WIPO, W02007/075006 [ P]. 2007 - 07 - 05. http: //ep. espacenet, com/advaneedSeareh? locale = en-EP.
7POSCO Company. High Manganese Steel Sheet for High Corrosion Resistance and Method of Manufacturing Galvanizing the Steel Sheet: WIPO, W02007/074994[P]. 2007- 07- 05. http: //ep. espacenet, com/advancedSearch? locale = en-EP.