Seminar on Functional Operators and Equations: Forschungsinstitut Für Mathematik, Eth, Zürich, October 1965 - July 1966 (Lecture Notes in Mathematics, 33)
The Rigged Hilbert Space and Quantum Mechanics: Lectures in Mathematical Physics at the University of Texas (Lecture Notes in Physics)
One-parameter Semigroups of Positive Operators (Lecture Notes in Mathematics, 1184)
Spectral Properties of Hamiltonian Operators
Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions (Lecture Notes in Mathematics, 858)
Almost Periodic Differential Equations (Lecture Notes in Mathematics, 377)
Commutative Formal Groups (Lecture Notes in Mathematics, 443)
Spectral Theory of Ordinary Differential Operators (Lecture Notes in Mathematics, 1258)
Spectral Theory and Differential Equations: Proceedings of the Symposium Held at Dundee, Scotland, July 1-19, 1974 (Lecture Notes in Mathematics, 448)
Abstract Analytic Function Theory and Hardy Algebras (Lecture Notes in Mathematics, Vol. 593) (Lecture Notes in Mathematics, 593)
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