1. and , The Inverse Scattering Theory, Gordon and Breach, New York, 1963.
2. and , Inverse Problems in Quantum Scattering Theory, Springer-Verlag, New York, 1977.
3. ASSOCIATED STURM-LIOUVILLE SYSTEMS
4. and , Theory of Ordinary Differential Equations, McGraw-Hill, New York, 1955.
5. Classical Scattering with a Trace Condition, Princeton University, Thesis, 1976; also to appear in Princeton Series in Physics.