  In this paper we provide exact expressions for propagators of noncommutative
Bosonic or Fermionic field theories after adding terms of the Grosse-Wulkenhaar
type in order to ensure Langmann-Szabo covariance. We emphasize the new
Fermionic case and we give in particular all necessary bounds for the
multiscale analysis and renormalization of the noncommutative Gross-Neveu
model.
