1. High Energy Collisions of Elementary Particles, Campbridge University Press, 1967.
2. Scattering Theory: Unitarity, Analyticity and Crossing, Lecture Notes in Physics, Vol. 3, Springer Verlag, Berlin, Heidelberg, New York 1969.
3. Invited Talk at the Kiev 1970 Conference CERN preprint TH. 1232 (1970).
4. Theory of the Low-Energy Pion-Pion Interaction
5. Dispersion Theory of Low Energy Scattering