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3. Official Journal of the European Union, Directive 2010/31/EC of the European Parliament and of the Council of 21 May 2010 on the Energy Performance of Buildings (recast) (consulted in December 2012), available in: http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:153:0013:0035:EN:PDF.
4. Intervention on the rehabilitation of rural houses in Portugal as a contribution to sustainable construction;Lanzinha;Architecture Civil Eng. Environ. J.,2010
5. Earth construction: Lessons from the past for future eco-efficient construction;Pacheco-Torgal;Construct. Build. Mater.,2012