Drygas,Hilmar Coordinate-free approach to Gauss-Markov estimation - Berlin Springer - Verlag 1970 - vii,113p. - Lecutre notes in operations research and mathematical systems 40 . ISBN: 3540053263 Subjects--Index Terms: Gauss-Markov estimation - lectures economics - lectures Dewey Class. No.: (042.3)537.633 / DRY