Optimal Successive Overrelaxation Iterative Methods fo P-Cyclic Matrices. W. Niethammer; M. Eiermann; ... — 1990 Numerische Mathematik
A Study of Semiiterative Methods for Nonsymmetric Systems of Linear Equations. W. Niethammer; R. Varga; M. Eiermann — 1985 Numerische Mathematik
On the Solution of Singular Linear Systems of Algebraic Equations by Semiiterative Methods. W. Niethammer; M. Eiermann; I. Marek — 1988 Numerische Mathematik
A generalization of the steepest descent method for matrix functions. Afanasjew, M.; Eiermann, M.; Ernst, O.G.; Güttel, S. — 2007 ETNA. Electronic Transactions on Numerical Analysis [electronic only]