Matthew Wilson, Richard Howarth. Discourse-based valuation of ecosystem services: establishing fair outcomes through group deliberation. „Ecological Economics”. 41 (3), s. 431-443, 2002. DOI: 10.1016/S0921-8009(02)00092-7.
Amartya Sen. Environmental Evaluation and Social Choice: Contingent Valuation and the Market Analogy. „Japanese Economic Review”. 46 (1), s. 23-37, 1995. DOI: 10.1111/j.1468-5876.1995.tb00003.x.
