Error estimates for mixed methods R. S. Falk; J. E. Osborn — 1980 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique
Reduced continuity finite element methods for first order scalar hyperbolic equations D.-M. Cai; R. S. Falk — 1994 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique