@InProceedings{l04-p540-556, AUTHOR = {Argimiro Arratia and Carlos Ortiz}, TITLE = {Approximating the expressive power of logics in finite models}, YEAR = 2004, ADDRESS = {Buenos Aires, Argentina}, BOOKTITLE = {Proc.~of the 6th Latin American Symposium on Theoretical Informatics (LATIN'04)}, PAGES = {540--556}, KEYWORDS = {}}