Matrix continued fractions related to first-order linear recurrence systems. Levrie, P.; Bultheel, A. — 1996 ETNA. Electronic Transactions on Numerical Analysis [electronic only]

Orthonormal polynomial vectors and least squares approximation for a discrete inner product. Van Barel, M.; Bultheel, A. — 1995 ETNA. Electronic Transactions on Numerical Analysis [electronic only]