EU Imports from the CEEC and the southern EU: Are they substitutes? (with Kurt Kratena), mimeo, 2001.

International Outsourcing and Price-Cost Margins in the EU (with Hartmut Egger), mimeo, 2001.

Time-invariant Variables in Panel Data: A Comment, mimeo, 2001. 
2-step 

International Outsourcing and the Productivity of Low-skilled Labor in the EU (with Hartmut Egger), WIFO-Working Paper 152/2001.

International Outsourcing and the Skill-Specific Wage Bill in Eastern Europe (with Robert Stehrer), WIFO-Working Paper 151/2001.

Distance, Trade and FDI: A SUR Hausman-Taylor Approach (with Michael Pfaffermayr), mimeo, 2001.
Distance

Proper Estimation of Cross-Section Gravity Models: A Note, mimeo, 2001; revision requested at Review of International Economics.
Hausman-Taylor 2-way

Transport Costs in A Multilateral World: The Pooling Assumption Revisited, WIFO-Working Paper 138/2001.
pooling.pdf

On the Problem of Endogenous Unobserved Effects in the Estimation of Gravity Models, WIFO-Working Paper 132/2000.
Hausman-Taylor.pdf

The Proper Econometric Specification of the Gravity Equation: A Three-Way Model With Bilateral Interaction Effects
(with Michael Pfaffermayr), mimeo,  2000; revision requested at Empirical Economics.
(Text: PDF-File, 0.06 MB)

Outsourcing and Skill-specific Employment in a Small Economy: Austria and the Fall of the Iron Curtain (with Hartmut Egger), Working Paper 0024, Universtity of Linz, 2000 (http://www.economics.uni-linz.ac.at/index.HTM). 

Trade, Multinational Sales, and FDI in a Three-Factors Model (with Michael Pfaffermayr), Working Paper 0013, Universtity of Linz, 2000. 
(Text: PDF-File, 0.3 MB)