1. Deterministic two-dimensional languages over one-letter alphabet;Anselmo,2007
2. From determinism to non-determinism in recognizable two-dimensional languages;Anselmo,2007
3. New operators and regular expressions for two-dimensional languages over one-letter alphabet;Anselmo;Theoret. Comput. Sci.,2005
4. Unambiguous recognizable two-dimensional languages;Anselmo,2006
5. On the complexity of unary tiling-recognizable picture languages;Bertoni,2007