Whittington D, Mu X, Lauria D, 1991, "A study of water vending and willingness to pay for water in Onitsha, Nigeria" World Development 19, 179 – 198.
'Participatory' Research for Development Projects: A Comparison of the Community Meeting and Household survey Techniques
"Participatory" Research for Development Projects: A Comparison of the Community Meeting and Household Survey Techniques Jennifer Davis and Dale Whittington Economic Development and Cultural Change, 1998, vol. 47, issue 1, pages 73-94
Carlsson, F. 1999. "Incentive-Based Environmental Regulation of Domestic Civil Aviation in Sweden". Transport Policy 6(2): 75-82.
Mekonnen, Alemu. 1999. “Rural Household Biomass Fuel Production and Consumption in Ethiopia: A Case Study .” Journal of Forest Economics 5:1: 69-97.
Eggert, H. 1998. ”Bioeconomic Analysis and Management: The case of fisheries”. Environmental and Resource Economics Vol.11, Nos.3-4.