1. Emission inventory for greenhouse gases in the city of Barcelona, 1987–1996;Baldasano,1996
2. Cadernos NAE # 3 (2005) – Notebook of the Nucleus of Strategic Studies/ Brazilian Presidency, from: https://www.planalto.gov.br/secom/nae/docs/AVolume%20II%20%20(rev%20050204).pdf.
3. CDM EB 23 (2006) from: http://cdm.unfccc.int/EB/023/eb23rep.pdf.
4. CDM modalities and procedures from http://cdm.unfccc.int/Reference/Documents/cdmmp, May, 2005.
5. ICLEI (2006) – www.iclei.org, July, 2006.