Lecture at the Congress of the Association of European Schools of Planning (AESOP), Helsinki, 9 July 2010. 'Shrinking Cities in the USA in Times of Economic Recession'
Lecture at the Congress of EURA, Understanding City Dynamics, Darmstadt, 24 September 2010. 'Shrinking Cities' planning strategies in international comparative perspective'
Lecture at the Symposium 'Shrinkage in Europe - causes, effects and policy strategies', Universität Amsterdam, 16 February 2011 'Shrinking Cities - a Challenge for Planning Cultures in the USA'
Lecture at the bi-annual meeting of the Academy of spatial research (ARL) regional working group Hessen, Rheinland-Pfalz, Saarland, Frankfurt, 21 March 2011 'Stadtschrumpfung im internationalen Vergleich'
Presentation of the draft Synopsis Report 'Cities Regrowing Smaller', EU COST Action workshop, Porto, 11 May 2011
Lecture at CITTA, 4th annual conference of planning research innovation in governance and decision making in planning, Porto, 13 May 2011 'Greening the Shrinking City - a new planning approach in the USA'
Keynote speech at the Seventh Annual ICLRD congress, Dundalk/Irelend, 20 January 2012 'The Planner's Toolkit - Can we plan for new tasks using existing processes and mechanisms?'
Lecture at the AESOP congress, Ankara, 6 July 2012, (together with Asaaied, Fleschurz, Steinhauer) 'Shrinking Cities and Planning Cultures - Theoretical and methodological considerations for evidence-based research'
Lecture at IGC Cologne, 29 August 2012, 'Greening the shrinking city - new sustainable planning approaches in the USA'
Lecture at the symposium of the Transatlant. Akademie Kaiserslautern, 27 September 2012 'Shrinking Cities - In Germany, and in America? What we can learn from each other'
Lecture at the international workshop PlanShrinking, Diemerstein, 28 September 2012 'Planning cultures and shrinking cities'
Lecture at the COST Action Cities regrowing smaller workshop, Po'znan, 23 October 2012 'Cities regrowing smaller - stages in the European comparison'
Lecture at the workshop sustainable land management, Berlin, 13 May 2013, 'Herausforderungen und Lernprozesse für Städte und Regionen'
Lecture at AESOP congress, Dublin, 16 July 2013 (together with Asaaied, Fleschurz): 'The Shrinking Cities Phenomenon and its Influence on Planning Cultures - Evidence from a German-American Comparison'
Lecture at the final conference of the COST action cities regrowing smaller, Essen, 13 September 2013, 'Distribution and Perception of Urban Shrinkage across Europe'
Keynote speech at Shrinking cites - expanding landscapes symposium, University of Edinburgh, 14 November 2013 'Shrinking cities - urban challenges from an international perspective'
Keynote speech at the international symposium 'Border studies', Luxemburg, 13 February 2014 'Spatial planning for border regions: planning styles in conflict?'
Lecture at Karlsruhe Institute of Technology, Technology Forum, Karlsruhe, 14 May 2014 'Shrinking cities in an international context'
Lecture at EURA congress, Paris, 19 June 2014, together with Asaaied Seba, Fleschurz René `From manufacturing to 'eds and meds' - What roles do place based substitute industries play in preventing the city of Kaiserslautern from shrinking?'
Lecture at the ILS workshop, Cologne, 14 November 2014 'Shrinkage in Suburbia - the American perspective'