Are 'New' Donors Different? Comparing the Allocation of Bilateral Aid Between Non-DAC and DAC Donor Countries. Kiel Working Paper 1601, March 2010 (with A. Dreher, P. Nunnenkamp).

Aid Allocation by German NGOs: Does the Degree of Public Refinancing Matter? Kiel Working Paper 1584, January 2010 (w. A. Dreher, P. Nunnenkamp, S. Thiel).

Does AIDS-Related Mortality Reduce Per-Capita Income? Evidence from Rural Zambia. Kiel Working Paper 1530, July 2009 (with T. Omar Mahmoud).

Less Aid Proliferation and More Donor Coordination: The Wide Gap Between Words and Deeds. Kiel Working Paper 1516, April 2009 (with I. Aldasoro, P. Nunnenkamp)

The Impact of Aid on Bureaucratic Quality: Does the Mode of Delivery Matter? Kiel Working Paper 1494, March 2009 (with P. Selaya)

Sind Nichtregierungsorganisationen die besseren Entwicklungshelfer? Kiel Workung Paper 1484, February 2009 (with P. Nunnenkamp). 

Aid and Sectoral Labor Productivity. Kiel Working Paper 1468, November 2008 (with P. Selaya).

Keeping a Low Profile: What Determines the Allocation of Aid by Non-Governmental Organizations? Kiel Working Paper 1406, March 2008 (with D.J. Koch, A. Dreher, P. Nunnenkamp). 

Do Donors Target Aid in Line With the Millennium Development Goals? A Sector Perspective of Aid Allocation. WIDER Discussion Paper No. 2007/04, October 2007 (with A. Dreher, P. Nunnenkamp).

The Impact of Commodity Price Changes on Rural Households: The Case of Coffee in Uganda.  
World Bank Policy Research Working Paper 4088, December 2006 (with M. Bussolo, O. Godart, J. Lay).

Does Aid for Education Educate Children? Evidence from Panel Data. Kiel Working Paper 1290, August 2006 (with A. Dreher, P. Nunnenkamp).

Resource Booms, Inequality and Poverty: The Case of Bolivia. Kiel Working Paper 1287, July 2006  (with J. Lay, M. Wiebelt).

Does US Aid Buy UN Voting Behaviour? A Disaggregated Analysis. Kiel Working Paper 1275, April 2006 (with A. Dreher, P. Nunnenkamp).

Sectoral Aid Priorities: Are Donors Really Doing their Best to Achieve the Millennium Development Goals? Kiel Working Paper 1266, January 2006 (with A. Dreher, P. Nunnenkamp).

Grants Versus Loans: Much Ado About (Almost) Nothing. Institute for World Economics, Kiel Economic Policy Papers 4, November 2005 (with P. Nunnenkamp, T. Wilfer).

Macroeconomic and Distributional Effects of Devaluation in a Dollarized Economy: A CGE Analysis for Bolivia. IAI Discussion Paper 120, University of Göttingen, October 2005) (with R. Schweickert, M. Wiebelt).

Assessing the Allocation of Aid: Developmental Concerns and the Self-Interest of Donors. Kiel Working Paper 1253, July 2005 (with G. Canavire, P. Nunnenkamp, L. Triveño).

Exchange Rate Policy in a Dollarized Economy. A CGE Analysis for Bolivia. Kiel Working Paper 1255, June 2005 (with R. Schweickart, M. Wiebelt).

Pro-Poor Growth in Bolivia: Accounting for External Shocks and Policy Reforms. Kiel Working Paper 1231, November 2004 (with J. Lay, M. Wiebelt).

From Washington to Post-Washington? – Consensus Policies and Divergent Developments in Latin America and Asia. Institute for World Economics, Kiel Discussion Paper 408, Kiel 2004 (with R. Schweickert).

Operationalizing Pro-Poor Growth: Country Case Study Bolivia.IAI Discussion Paper 101, University of Göttingen, September 2004 (with S. Klasen, M. Grosse, J. Lay, J. Spatz, M. Wiebelt).

Makroökonomische Stabilisierung und Wirtschaftswachstum in Lateinamerika: Was bringt die Debatte über den Washington-Konsens? Institute for World Economics, Kiel Working Papers 1202, Kiel 2004 (with R. Schweickert).

Strategien zur Bekämpfung der weltweiten Armut: Irrwege, Umwege und Auswege. Institute for World Economics, Kiel Discussion Paper 407, Kiel 2004 (with P. Nunnenkamp).

Attacking Poverty in Bolivia – Past Evidence and Future Prospects: Lessons from a CGE Analysis. Instituto de Investigaciones Socioeconómicas, Documento de Trabajo 06/03. La Paz 2003 (with M. Wiebelt).

Makroökonomische Reformen und Armutsbekämpfung in Bolivien: Ebnet die HIPC-Initiative den Weg zu sozialverträglicher Anpassung? Kiel Discussion Paper 398, Kiel 2003 (with R. Scheickert, M. Wiebelt).

Price Incentives, Non-Price Factors, and Agricultural Production in Sub-Saharan Africa: A Cointegration Analysis. Kiel Working Paper 1123, July 2002.

The Bias Against Agriculture in Sub-Saharan Africa: Has it Survived 20 Years of Structural Adjustment Programs? Kiel Working Paper 1102, April 2002.

Constructing a Social Accounting Matrix with a Distributional Focus: The Case of Bolivia. Kiel Working Paper 1094, January 2002 (with D. Piazolo).

The Social Impact of Structural Adjustment in Bolivia. Kiel Working Paper 1056, July 2001.

Estimating the Aggregate Agicultural Supply Response: A Survey of Techniques and Results for Developing Countries. Kiel Working Paper 1016, December 2000.

East Timor's Transition to Independence: Building Up an Economy from Scratch.Kiel Discussion Papers 368, October 2000.

Sind die Anpassungsprogramme von IWF und Weltbank gescheitert? Eine Bestandsaufnahme der Erfahrungen von zwei Jahrzehnten. Kiel Discussion Papers 357, February 2000 (with M. Wiebelt).

A Framework for Environmental Policy Evaluation in the South African Mining Sector. Kiel Working Paper 893, September 1998.

Social Policy in Economic Development: The Case of Health and Old Age Insurance. Kiel Working Paper 811, June 1997.

Tropenwaldmanagement: Ein Balanceakt zwischen Schutz und Raubbau. Kiel Discussion Paper 282, October 1996.

Public Policies and Deforestation in Indonesia. Kiel Working Paper 605, October 1993.

Empirische Allgemeine Gleichgewichtsmodelle – Struktur und Anwendungsmöglichkeiten. Kiel Working Paper 595, August 1993 (with G. Klepper, O. Lorz, F. Stähler, M. Wiebelt).

National and International Policies for Tropical Rainforest Conservation: A Quantitative Analysis for Cameroon. Kiel Working Paper 570, April 1993 (with M. Wiebelt).

Modelling Deforestation in a Computable General Equilibrium Model. Kiel Working Paper 555, February 1993 (with M. Wiebelt).

Peruvian Agriculture: Recent History, Present Performance and the Effects of Agricultural and General Economic Policies. Kiel Working Paper 474, March 1991.

The Profile of Agricultural Protection in Zimbabwe. Kiel Working Paper 457, January 1991 (with A. Rukovo, T. Takararasha, M. Wiebelt).

Structure and Determinants of Price Protection in the Rice Sector. Kiel Working Paper 448, December 1990.