Authors: Champ, PA Bishop, RC

Citation: Pa. Champ et Rc. Bishop, Donation payment mechanisms and contingent valuation: An empirical study of hypothetical bias, ENVIRON R E, 19(4), 2001, pp. 383-402

Authors: Champ, PA Loomis, JB

Citation: Pa. Champ et Jb. Loomis, WTA estimates using the method of paired comparison: Tests of robustness, ENVIRON R E, 12(3), 1998, pp. 375-386