A note on Newbery's algorithm for discrete least-squares approximation by trigonometric polynomials. Faßbender, Heike — 1996 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
Solving large-scale quadratic eigenvalue problems with Hamiltonian eigenstructure using a structure-preserving Krylov subspace method. Benner, Peter; Fassbender, Heike; Stoll, Martin — 2007 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
Cholesky-like factorizations of skew-symmetric matrices. Benner, Peter; Byers, Ralph; Fassbender, Heike; Mehrmann, Volker; Watkins, David — 2000 ETNA. Electronic Transactions on Numerical Analysis [electronic only]
Structured polynomial eigenproblems related to time-delay systems. Fassbender, Heike; Mackey, D.Steven; Mackey, Niloufer; Schröder, Christian — 2008 ETNA. Electronic Transactions on Numerical Analysis [electronic only]