TY - JOUR AU - Potrykus, Alexander TI - A symbolic calculus and a parametrix construction for pseudodifferential operators with non-smooth negative definite symbols. JO - Revista matemática complutense PY - 2009 VL - 22 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RMC_2009_2009_1_a13/ LA - en ID - RMC_2009_2009_1_a13 ER -