An analysis on the structural stability of Okun's law--a cross-country study

von Sögner, Leopold, Stiassny, Alfred
Veröffentlicht 2002

An econometric analysis of maintenance costs as a basis for infrastructure charges for the Austrian railway system

von Munduch, Gerhard, Pfister, Alexander, Stiassny, Alfred, Sögner, Leopold
Veröffentlicht 2008