[en] The question of how an interacting field model reacts to perturbations by an external source is discussed. The external source problem is described, then phase II, expansion in graphs, a bound on graphs, the inductive construction, and phase space localization are discussed. (U.S.)
Iverson, G. (ed.); p. 145-156; 1973; Plenum Publishing Corp; New York; Conference on fundamental interactions at high energy; Coral Gables, Florida, USA; 26 Jan 1972