Argimiro Arratia, Carlos E. Ortiz On a syntactic approximation to logics that capture complexity classes [Citation Graph (0, 0)][DBLP] Electronic Colloquium on Computational Complexity (ECCC), 2006, v:, n:014, pp:- [Journal]
Argimiro Arratia On the Descriptive Complexity of a Simplified Game of Hex. [Citation Graph (0, 0)][DBLP] Logic Journal of the IGPL, 2002, v:10, n:2, pp:105-122 [Journal]