Generalized matrix versions of the Cauch-Schwarz and Kantorovich inequalities. J.K. Baksalary; S. Puntanen — 1991 Aequationes mathematicae
Generalized matrix versions of the Cauchy-Schwarz and Kantorovich inequalities. J.K. Baksalary; S. Putanen — 1990 Aequationes mathematicae