1. The Millennium Development Goals Report 2015;United Nations,2015
2. United Nations, 2015b. Transforming our world: the 2030 Agenda for Sustainable Development. Seventieth session, Agenda items 15 and 116. Resolution adopted by the General Assembly on 25 September 2015. A/RES/70/1.
3. Global Sustainable Development Report;UN,2015
4. Bergoglio F. (2015) “Encyclical Letter Laudato si’ of the Holy Father Francis on care for our common home” http://w2.vatican.va/content/francesco/en/encyclicals/documents/papa-francesco_20150524_enciclica-laudato-si.html. Last access August 2015.
5. Council of Europe (1972) “European soil Charter” https://wcd.coe.int/ViewDoc.jsp?id=654589. Last access August 2015.