Spectral Theory of Ordinary Differential Operators (Lecture Notes in Mathematics, 1258)
Schrödinger Operators, Aarhus 1985 Lectures given in Aarhus, October 2-4, 1985
Regular Boundary Value Problems Associated with Pairs of Ordinary Differential Expressions (Lecture Notes in Mathematics, 858)
Ordinary and Partial Differential Equations Proceedings of the Eighth Conference held at Dundee, Scotland, June 25-29, 1984
Schrödinger Operators, Como 1984: Lectures given at the 2nd 1984 Session of the Centro Internationale Matematico Estivo (C.I.M.E.) held at Como, ... 1984 (Lecture Notes in Mathematics, 1159)
Spectral and Scattering Theory
Precise Spectral Asymptotics for Elliptic Operators Acting in Fiberings over Manifolds with Boundary (Lecture Notes in Mathematics, 1100)
Conference on the Theory of Ordinary and Partial Differential Equations: Held in Dundee/Scotland, March 28 - 31, 1972 (Lecture Notes in Mathematics, 280)
Periodic Differential Operators
Pseudo-Differential Operators Proceedings of a Conference, held in Oberwolfach, February 2-8, 1986