7Wang R S. Ancient and Recent Ecological City Theory and Practice in China. Village Wisdom-Future Cities. The Third International Ecocity and Ecovillage Conference, edited by R. Register and B. Peeks. Ecocity Builders, Oakland, CA, USA. ,1996. 56-58.
8Register R. The Ecocity Movement-Deep History, Movement of Opportunity. Village Wisdom/Future Cities. The Third InternationalEcocity and Ecovillage Conference , Ecocity Builders, Oakland, CA, USA. ,1996.26-29.
9Register R. Eco-city Berkeley: Building Cities for A Healthier Future. CA : North Atlantic Books, 1987. 13- 43.
