TY - JOUR AU - Ralph deLaubenfels TI - Inverses of generators of nonanalytic semigroups JO - Studia Mathematica PY - 2009 SP - 11 EP - 38 VL - 191 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4064/sm191-1-2/ DO - 10.4064/sm191-1-2 LA - en ID - 10_4064_sm191_1_2 ER -