1. Aktiva Servicios Financieros: La industria del cemento en Colombia, 2013.
2. Argos Cementos; Reporte integrado, 2012.
3. CANACEM - Camara Nacional del Cemento, 2014. www.canacem.org.mx/la_industria_plantas.htm.
4. Sustainable cement production: co-processing of alternative fuels and raw materials in the european cement industry;CEMBUREAU;CEMBUREAU: Activity Report - The cement sector: a strategic contribute to Europe's future,2009
5. CEMEX: Alternative Fuels, 2013c. http://www.cemex.com/MediaCenter/files/CEMEX_POSITION_on_Alternative_Fuels.pdf CEMEX: Local Reports - Sustainable Development Report, 2009. http://www.cemex.com/SustainableDevelopment/LocalReports.aspx CEMEX: Sustainable development report, 2013b.