Liming Cai, Jianer Chen, Rodney G. Downey, Michael R. Fellows. On the Structure of Parameterized Problems in NP (Extended Abstract). In Patrice Enjalbert, Ernst W. Mayr, Klaus W. Wagner, editors, STACS 94, 11th Annual Symposium on Theoretical Aspects of Computer Science, Caen, France, February 24-26, 1994, Proceedings. Volume 775 of Lecture Notes in Computer Science, pages 509-520, Springer, 1994.
Abstract is missing.