Hiedanpää, Juha & Bromley, Daniel W. (2014) Payments for Ecosystem Services: Durable Habits, Dubious Nudges, Doubtful EfficacyJournal of Institutional Economics 10 (2): 175-195. http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=9245219&fileId=S1744137413000428#