Author: Exner, P.

Blank, J.; Exner, P.: Remarks on tensor proucts and their applications in quantum theory - II. Spectral properties. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 18 (1977), issue 1, pp. 3-35
Blank, J.; Exner, P.: Remarks on tensor products and their applications in quantum theory I. General considerations. (English). Acta Universitatis Carolinae. Mathematica et Physica, vol. 17 (1976), issue 2, pp. 75-98