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2. CII (2012). CII Performance Assessment Brochure (2012 Edition). Austin TX: The Construction Industry Institute The University of Texas at Austin.
3. Construction Industry Institute. Institutional site. Available in: www.constructioninstitute.org
4. Corporacion de Dearrollo Tecnologico. National benchmarking system for the construction industry. Report. 1 ed. CDT Santiago Chile (in Spanish).