@article{DMTCS_2013_15_2_a5,
     author = {Anselmo, Marcella and Madonia, Maria},
     title = {A stronger recognizability condition for two-dimensional languages},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2013},
     doi = {10.46298/dmtcs.599},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.599/}
}