TY - BOOK TI - 0(N) nonlinear sigma model in perturbation theory T3 - Continuum limit and improved action in lattice theories AU - Symanzik, Kurt CY - Hamburg PB - DESY PY - 1983 PY - 1983 LA - English UR - http://epub.sub.uni-hamburg.de/epub/volltexte/2012/13507/ UR - https://katalog.ub.tu-freiberg.de/Record/0-687564824 ER -