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47.30 Spectral theory, functional calculus (3 articles)

• Kováříková, Marta: On the polar decomposition of scalar-type operators. (English). Czechoslovak Mathematical Journal, vol. 17 (1967), issue 3, pp. 313-316
• Kluvánek, Igor; Kováříková, Marta: Product of spectral measures. (English). Czechoslovak Mathematical Journal, vol. 17 (1967), issue 2, pp. 248-256
• Nollau, V.: Über die Potenzen $A^\alpha$ $(0\le\alpha\le1)$ eines abgeschlossenen Operators $A$ in einem Banachraum. (German) [On powers $A^\alpha$ $(0\le\alpha\le1)$ of a bounded operator $A$ in a Banach space]. In: General Topology and its Relations to Modern Analysis and Algebra. Proceedings of the second Prague topological symposium, 1966. Academia Publishing House of the Czechoslovak Academy of Sciences, Praha, 1967. pp. 271-273