This volume covers a large range of interesting topics from many areas of economics ranging from conceptual and methodological foundations of economic theory to theoretical and empirical demand analysis. It includes articles on the economics of the public sector, of network industries, and of imperfect competition; on general equilibrium analysis and game theory; and on experimental, monetary, and financial economics. Papers presenting original research are supplemented by stimulating surveys. They together offer a broad spectrum for professional economists and doctoral students alike. Among the authors are some of the world's leading economists including two Nobel Laureates.