Filippo Mignosi, Antonio Restivo, Pedro V. Silva. On Fine and Wilf s theorem for bidimensional words. Theoretical Computer Science, 292(1):245-262, 2003.
@article{MignosiRS03, title = {On Fine and Wilf s theorem for bidimensional words}, author = {Filippo Mignosi and Antonio Restivo and Pedro V. Silva}, year = {2003}, researchr = {https://researchr.org/publication/MignosiRS03}, cites = {0}, citedby = {0}, journal = {Theoretical Computer Science}, volume = {292}, number = {1}, pages = {245-262}, }