Western Legal Traditions (series Ius Commune Casebooks, Oxford, Hart Publishing), project directors D. Heirbaut and R. Van Rhee. Other contributors: J.L. Halperin, J. Vanderlinden, D. Heirbaut, O. Morétau and others.

Jurisdictional complexity in Western legal history, c1600-1900 (Duncker und Humblot, Berlin, funded by Gerda Henkel Stitftung), project directors: S. Donlan and Dirk Heirbaut. Other contributors: Alain Wijffels, D Heirbaut, Sean Donlan, J. Vanderlinden, B Durand, A. Musson.

Comparative Legal History (Research Handbooks in Comparative Law series, E. Elgar Publishing, London), project directors: A. Masferrer and O. Moretau. Other contributors: James Gordley, David Ibbestson, J.L. Halperin, J. Vanderlinden, D. Heirbaut, S. Donlan.

The law of presumptions (Duncker und Humblot, Berlin, funded by Gerda Henkel Stitftung), project director Knut W. Nörr. Other contributors Richard Helmholz, Barbara Shapiro, Remco V. Rhee.