Bateman, I. J., Carson, R. T., Day, B., Hanemann, M., Hanleys, N., Hett, T., Jones-Lee,
M., Loomes, S., Mourato, E., Ozdemiroglu, E., Pearce, D. W., Sugden, R. and Swanson,
J. (2002). Economic valuation with stated preference technique: a manual, Cheltenham,
UK; Northampton, MA : Edward Elger.Bateman, I. J., Carson, R. T., Day, B., Hanemann,
M., Hanleys, N., Hett, T., Jones-Lee, M., Loomes, S., Mourato, E., Ozdemiroglu, E.,
Pearce, D. W., Sugden, R. and Swanson, J. (2002). Economic valuation with stated preference
technique: a manual, Cheltenham, UK; Northampton, MA : Edward Elger.