On the interrelation between the consumption of impure public goods and the provision of direct donations:theory and empirical evidence Lange, Andreas Schwirplies, Claudia Ziegler, Andreas 2017 - Forschungsinformationssystem der UHH
Offsetting versus mitigation activities to reduce CO2 emissions:a theoretical and empirical analysis for the U.S. and Germany Lange, Andreas Ziegler, Andreas 2017 - Forschungsinformationssystem der UHH