00429nam a2200121Ia 4500082002000000100004800020245010000068260003400168300002600202490003900228500000500267700003500272  a515.35bB344.DO  aBauer, Karl Wilhelm and Ruscheweyh, Stephan  aDifferential operators for partial differential equations and function theoretic applicationsb  aBerlinbSpringer-Verlagc1980  av, 258p. Index, Bibl.  aLecture notes in Mathematicsv 791  a  aRuscheweyh, Stephan ; jt. auth