1. Buszkowski, W.: Discovery procedures for categorial grammars. In: Klein, E., van Benthem, J. (eds.) Categories, Polymorphism and Unification. University of Amsterdam (1987)
2. Buszkowski, W., Penn, G.: Categorial grammars determined from linguistic data by unification. Studia Logica 49, 431–454 (1990)
3. Lecture Notes in Artificial Intelligence;C. Costa Florêncio,2002
4. Costa Florêncio, C.: Learning Categorial Grammars. PhD thesis, Universiteit Utrecht, The Netherlands (2003)
5. Downey, R.G., Fellows, M.R.: Parameterized Complexity. Springer, Heidelberg (1999)