Computation of quantum fluctuations around multi-instanton fields from exact Green's functions : the CP n-1 case Berg, B. Lüscher, M. 1979 - DESY EPflicht - frei zugänglich
More about the S matrix of the chiral SU(N) Thirring model Abdalla, E. Berg, B. Weisz, P. 1979 - DESY EPflicht - frei zugänglich
Computation of quantum fluctuations of quark fields in an arbitrary Yang-Millian instanton background Berg, B. Lüscher, M. 1979 - DESY EPflicht - frei zugänglich