@conference{Satoh90,
author = "Ken Satoh",
address = "Stockholm",
booktitle = "Proc. of the 8$^th$ ECAI",
keywords = "contraintes, preferences, logique",
pages = "585-590",
title = "{F}ormalizing {S}oft {C}onstraints by {I}nterpretation
                   {O}rdering",
year = "1990",
}