1. M. Anselmo, D. Giammarresi, M. Madonia. Tiling Automaton: A Computational Model for Recognizable Two-Dimensional Languages. Procs. CIAA07, LNCS 44783, 290-302, Springer Verlag, 2007.
2. M. Anselmo, D. Giammarresi, M. Madonia. From Determinism to Non-determinism in Recognizable Two-dimensional Languages.Procs. DLT07, LNCS 4588, 36-47, Springer Verlag, 2007.
3. M. Anselmo, D. Giammarresi, M. Madonia, A. Restivo. Unambiguous Recognizable two-dimensional languages. RAIRO - Inf. Theor. Appl. 40 (2006) 277-293
4. 4. M. Anselmo,M. Madonia Deterministic and Unambiguous Two-dimensional Languages over One-letter Alphabet.Theoretical Computer Science, to appear.
5. A. Bertoni, M. Goldwurm, V. Lonati. On the Complexity of Unary Tiling-Recognizable Picture Languages. Procs. STACS’07, LNCS 4393, 381-392, Springer Verlag, 2007.