@book{Volkery2003, author = {Volkery, Axel and Jacob, Klaus}, year = {2003}, language = {ger}, copyright = {http://www.fu-berlin.de/sites/refubium/rechtliches/Nutzungsbedingungen}, title = {Pioneers in environmental policy-making}, url = "http://dx.doi.org/10.17169/refubium-23254", }