Van Berkel, Rene; Fujita, Tsuyoshi; Hashimoto, Shizuka; Geng, Yong (March 2009). "Industrial and urban symbiosis in Japan: Analysis of the Eco-Town program 1997–2006". Journal of Environmental Management. 90 (3): 1544–1556. doi:10.1016/j.jenvman.2008.11.010. PMID19101071.
Van Berkel, Rene; Fujita, Tsuyoshi; Hashimoto, Shizuka; Geng, Yong (March 2009). "Industrial and urban symbiosis in Japan: Analysis of the Eco-Town program 1997–2006". Journal of Environmental Management. 90 (3): 1544–1556. doi:10.1016/j.jenvman.2008.11.010. PMID19101071.