Antonio Frias Delgado Jose Antonio Jimenez Millan An Abductive Mechanism for Natural Language Processing Based on Lambek Calculus. 87-101 2000 conf/jelia/2000 JELIA http://link.springer.de/link/service/series/0558/bibs/1919/19190087.htm db/conf/jelia/jelia2000.html#DelgadoM00