1. Leçons d'analyse fonctionelle;Riesz,1953
2. A theory of cross-spaces;Schatten,1950
3. Operator-valued entropy of a quantum-mechanical measurement;Davis,1961
4. Convex functions of quadratic forms;Marcus;Duke Math. J.,1957
5. Separation of two linear subspaces;Davis;Acta Sci. Math. Szeged.,1958