@inproceedings{TAPSOFT-1993-BarcucciPS,
	author        = "Elena Barcucci and Renzo Pinzani and Renzo Sprugnoli",
	booktitle     = "{Proceedings of the Fifth International Joint Conference on Theory and Practice of Software Development}",
	doi           = "10.1007/3-540-56610-4_71",
	isbn          = "3-540-56610-4",
	pages         = "282--298",
	publisher     = "{Springer}",
	title         = "{Directed Column-Convex Polyominoes by Recurrence Relations}",
	year          = 1993,
}