Cambridge'i Ülikool, visiting scholar 2002-...
Central University of Venezuela, Post-Graduate School of Economics, Research Fellow 1997-
Sussexi Ülikool, külalisprofessor 1997-
Cambridge'i Ülikool, Cambridge Endowment for Research in Finance, Judge Institute, Visiting Senior Research Fellow, 2003-2006
United Nations University, Institute of New Technologies (Maastricht), Adjunct Senior Research Fellow, 2001-2002
Sussexi Ülikool, Honorary Research Fellow, Science and Technology Policy Research, 1987-2006