INFORMACIÓN OBTENIDA DE:
http://www.expansion.com/2010/10/27/opinion/editorialyllaves/1288209203.html?a=ef67b60112c9bdb38fa9c50060aa0d3c&t=1288235010
http://www.expansion.com/2010/10/27/economia/1288216456.html?a=OR2661404fd7ccd0a0df330f1985719b8b6&t=1288289968
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