Conflicts of Laws
http://conflictoflaws.net/
Hague Conference on Private International Law
http://www.hcch.net/index_en?
Institut Suisse de droit comparé
http://www.isdc.ch/
Max Planck Institute for Private Law – Hamburg
http://www.mpipriv.de/ww/en/pub/library.htm
UNCITRAL
http://www.uncitral.org/uncitral/en/index.html
UNIDROIT
http://www.unidroit.org/