1. Ancel S, DiSera D, Lerner N, Stewart MA (2006) Building a business case for geospatial information technology: a practitioner’s guide to strategic and financial analysis. American Water Works Association Research Foundation and Geospatial Information Technology Association, Aurora, 212p
2. Ancel S, DiSera D, Lerner N, Stewart MA (2007) Building a business case for shared geospatial data and services: a practitioner’s guide to financial and strategic analysis for a multi-participant program. US Federal Geographic Data Committee and Geospatial Information Technology Association, 155p. Retrieved from
http://www.fgdc.gov/policyandplanning/50states/roiworkbook.pdf
3. Bernknopf R, Brookshire DS, McKee M, Soller DR (1997) Estimating the social value of map information: a regulatory application. J Environ Econ Manage 32:204–218
4. Bernknopf R, Wein A, St Onge M, Lucas S (2007) Analysis of improved government geological map information for mineral exploration: incorporating efficiency, productivity, effectiveness, and risk considerations. Geological Survey of Canada Bulletin 593 and USGS Professional Paper 1721, Ottawa, 45p
5. Boardman A, Greenberg D, Vining A, Weimer D (1996) Cost-benefit analysis: concepts and practice. Prentice Hall, Upper Saddle River, p 493p