H. Lehmann

Field operators and retarded functions

W. Zimmermann, V. Glaser, H. Lehmann, 1957 .

Scattering matrix and field operators

H. Lehmann, 1959 .

Analytic properties of scattering amplitudes as functions of momentum transfer

H. Lehmann, 1958 .

On the formulation of quantized field theories — II

K. Symanzik, W. Zimmermann, H. Lehmann, 1957 .

On the superpropagator of fields with exponential coupling

K. Pohlmeyer, H. Lehmann, 1971 .