Johannes Gutenberg-Universität Mainz, GERMANY
April 1997 - September 1998

Subjekt und Selbstmodell

The University of Georgia, Athens, USA
Mai 2006 - Juli 2006

Mechanistic Proxy Development Through Modeling Trace Element Incorporation in Foraminiferal Carnonate as a Function of Seawater Compositon and Vital Effects

Universidad Autonoma de Madrid, SPAIN
September 1999 - Februar 2000

Die intergenerationalen Solidarbeziehungen innerhalb der spanischen Familien

Katholieke Universiteit Nijmegen, THE NETHERLANDS
Oktober 1999 - Dezember 1999

The Distribution of Synapses and Receptors Over the Surface Ofidentified Vertrebrate Neurons

University of Massachusetts, USA
Januar 2002 - Juni 2002

Mikrobial Mats and Biofilms

Max Planck Group, Common Goods: Law, Politics and Economics, GERMANY
August 2002 - September 2002

The Constitutionalisation of International Politics: New Approaches to Governance in the European Union and the World Trade Organisation

November 2025

University of Essex, UNITED KINGDOM
Januar 1998 - Dezember 2000

Inclusion and Exclusion in the Structuring of Migrants' Rights

Old Dominion University, USA
Februar 1999 - April 1999

Photochemical Reactivity and Bioavailability of Aquatic Humic Substances

Januar 2023