1. G. Bennett, Conserving Europe’s Natural Heritage: Towards a European Ecological Network (Graham & Trotman/Martinus Nijhoff, London, 1994), pp. 285–288.
2. N. Mézard, K. Sundseth, and S. Wegefelt, Natura 2000: Protecting Europe’s biodiversity (Information Press, Oxford, 2008), pp. 11–23.
3. A. Jordan, C. Adelle, Environmental Policy in the European Union (Oxon: Routledge, Abingdon, 2013), pp. 16–31.
4. O. Mudrak, “Stages of creation of the European ecological network,” in Environmental Protection. Energy saving. Balanced nature management, Collection of Materials of the I International Congress (Lviv Polytechnic National University Publishing House, Lviv, 2009), pp. 153–155.
5. L. Geidezis, M. Kreutz, “Green Belt Europe – structure of the initiative and significance for a Pan European Ecological Network,” in The Green Belt as a European Ecological Network – strengths and gaps, Proceedings of the 1st GreenNet Conference, edited by I. Marschall, M. Gather and M. Müller (Berichte des Instituts Verkehr und Raum, Erfurt, 2012), pp. 12–21.