Search for: [References = "58. Schmidt‑Seiwert, V., Porsche, L., Schön, P. \(eds.\), 2006. ESPON Atlas. Mapping the structure of the European territory. October 2006. \[ESPON project 3.1\]. European Spatial Planning Observation Network. Monitoring Committee, Bonn\: Federal Office for Building and Regional Planning, 88 pp."]