First-Order System LL* (FOSLL*) for General Scalar Elliptic Problems in the Plane. - Thomas A. Manteuffel; Stephen F. McCormick; John W. Ruge; J. G. Schmidt (SIAM J. Numer. Anal., 2005)

First-Order System Least Squares for Geometrically Nonlinear Elasticity. - Thomas A. Manteuffel; Stephen F. McCormick; J. G. Schmidt; C. R. Westphal (SIAM J. Numer. Anal., 2006)