1. The Bern Convention: 30 years of nature conservation in Europe;Lasén Díaz;RECIEL,2010
2. Council of Europe (2011) Draft revised annex I of resolution 6 (1998) of the Bern Convention. T-PVS/PA (2011) 15 Council of Europe, Strasbourg, France [www document]. URL http://www.coe.int/t/dg4/cultureheritage/nature/Bern/Institutions/Documents/122011/Draft_TPVS_PA_2011_15E.pdf
3. Protecting biodiversity in the European Union: national barriers and European opportunities?
4. The Habitats of the European Union Habitats Directive
5. WWF DCP (2004) Proposal for habitats types to be included in Council Directive 92/43/EEC and in the Interpretation Manual of European Union Habitats EUR 15/2. Sofia, Bulgaria [www document]. URL http://assets.panda.org/downloads/natura2000_habitats_proposals_2004eng_1.pdf