Logical Aspects of Computational Linguistics 4th International Conference, LACL 2001, Le Croisic, France, June 27-29, 2001, Proceedings - Groote, Philippe de; Groote, Philippe de; Morrill, Glyn; Morrill, Glyn; Retore, Christian; Retore, Christian (Springer Berlin Heidelberg : Imprint: Springer, 2001)