1Hannes palang, etc, Holistic aspects in landscape development: a scenario approach,Landscape and Urban Planning 50 (2000) 85-94
2Robert L. Ryan. Local perceptions and values for a Midwestern river corridor. Landscape and Urban Planning, 42(1998) 225-237
3Juliette Kuiper. Landscape quality based upon diversity. coherence and continuity. Landscape planning at different planning-levels in the River area of The Netherlands. Landscape and Urban Planning. 43(1998)91~104
4Werner Nohl. Sustainable landscape use and aesthetic perception-preliminary reflections on future landscape aesthetics. Landscape and Urban Planning.54 (2001) 223-237