Polynomial least squares approximations with Ill-conditioned bases. - Gerard R. Richter; William L. Steiger (Computing, 1977)

On the stability of a family of finite element methods for hyperbolic problems. - Gerard R. Richter (Math. Comput., 2002)

Stable Finite Element Box Methods for Hyperbolic Equations. - Gerard R. Richter (SIAM J. Numer. Anal., 2002)

A Discontinuous Galerkin Method for Linear Symmetric Hyperbolic Systems in Inhomogeneous Media. - Peter Monk 001; Gerard R. Richter (J. Sci. Comput., 2005)

On the order of convergence of the discontinuous Galerkin method for hyperbolic equations. - Gerard R. Richter (Math. Comput., 2008)