Elena Barcucci, Renzo Pinzani, Renzo Sprugnoli. Directed Column-Convex Polyominoes by Recurrence Relations. In Marie-Claude Gaudel, Jean-Pierre Jouannaud, editors, TAPSOFT 93: Theory and Practice of Software Development, International Joint Conference CAAP/FASE, Orsay, France, April 13-17, 1993, Proceedings. Volume 668 of Lecture Notes in Computer Science, pages 282-298, Springer, 1993.
Abstract is missing.