Hydropower versus non-market values of nature : a contingent valuation study of Jägala Waterfalls, EstoniaEhrlich, Üllas; Reimann, MartInternational journal of geology2010 / 3, p. 59-63

Public demand for shores in natural condition : a contingent valuation study in EstoniaReimann, Mart; Ehrlich, Üllas; Tõnisson, HannesInternational journal of geology2012 / p. 36-43 : ill