1. A city is not a tree;Alexander,1965
2. The Timeless Way of Building;Alexander,1979
3. A Pattern Language: Towns, Buildings, Construction;Alexander,1977
4. Experiments in Recreation Research;Burton,1971
5. Are habitat corridors conduits for animals and plants in a fragmented landscape? A review of the Scientific literature;Dawson;English Nature Research Report. No. 95,1994