• Anderson, L. M. and H. K. Cordell. 1988. Residential Property Values Improved by Landscaping with Trees. Southern Journal of Applied Forestry. 9:162166.
  • Bureau of Environmental Services. 2004. Fanno Creek Watershed Overview. December 22.
  • Bureau of Labor Statistics. 2002. Consumer Price Index-All Urban Consumers Series, Seasonally Adjusted, U.S. city average (Base Period: 1982–84=100) (October 21, 2002).
  • Colby, B. and S. Wishart. 2002. Quantifying the Influence of Desert Riparian Areas on Residential Property Values. The Appraisal Journal 70 (3): 304308.
  • Cropper, M., L. B. Deck and K. E. McConnell. 1988. On the Choice of Functional Form for Hedonic Price Functions. The Review of Economics and Statistics 70 (4) 668675.
  • Freeman III, A. M. 2003. The Measurement of Environmental and Resource Values: Theory and Methods (2nd edition). Resources for the Future, Washington, DC.
  • Lutzenhiser, M. and N.R. Netusil. 2001. The Effect of Open Spaces on a Home's Sale Price. Contemporary Economics Policy 19(3): 291298.
  • Mahan, B., S. Polasky. 2000. Valuing Urban Wetlands: A Property Price Approach. Land Economics 76 (1): 100113.
  • Metro. 2003. Economic, Social, Environmental and Energy Analysis: Executive Summary (September).
  • Metro. 2005. Nature in Neighborhoods: Frequently Asked Questions about Nature in Neighborhoods (April 15).
  • Metro. 2005a. Fish and Wildlife Habitat Protection: Habitat Inventory (March 21).
  • Metro. 2005b. Nature in the Neighborhood Ordinance and Maps (December 5).
  • Mooney, S. and L. M. Eisgruber. 2001. The Influence of Riparian Protection Measures on Residential Property Values: The Case of the Oregon Plan for Salmon and Watersheds. Journal of Real Estate Finance and Economics 22 (2/3): 27386.
  • Netusil, N. R. 2005a. The Effect of Environmental Zoning and Amenities on Property Values: Portland, Oregon. Land Economics 81 (2).
  • Netusil, N. R. 2005b. Does Ownership Matter? Examining the Relationship Between Property Values and Privately and Publicly Owned Open Spaces, Streams and Wetlands. Reed College, Department of Economics, Working Paper (April).
  • Oregon Department of Land Conservation and Development. 1996. Goal 5 : Natural Resources, Scenic and Historic Areas, and Open Spaces (August 30).
  • Streiner, C. F. and J. Loomis. 1995. Estimating the Benefits of Urban Stream Restoration Using the Hedonic Price Method. Rivers 5 (4): 26778.
  • Tyrvainen L. and A. Miettinen. 2000. Property Prices and Urban Forest Amenities. Journal of Environmental Economics and Management 39: 205223.
  • Wilson, M. A. and S. R. Carpenter. 1999. Economic Valuation of Freshwater Ecosystem Services in the United States: 1971–1997. Ecological Applications, 9(3): 772783.