1. IPCC 2013: Summary for Policymakers,2013
2. Climate Change 2014: Mitigation of Climate Change. Contribution of Working Group III to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change,2014
3. The European Space Agencyhttp://www.esa.int/Applications/Observing_the_Earth/Methane_and_carbon_dioxide_on_the_rise
4. Activity Report,2017
5. Cement Industry Energy and CO2 Performance. Getting the Numbers Right (GNR) Project,2018