Mortensen, C.2006-12-032006-12-032005Logique et Analyse, 2005; 48(189-192):351-3600024-5836http://hdl.handle.net/2440/16888enIt isn't so, but could it be?Journal article00200522782-s2.0-6104915566953759Mortensen, C. [0009-0001-3942-2126]