Bauer, Karl Wilhelm and Ruscheweyh, Stephan <br/><br/>
Differential operators for partial differential equations and function theoretic applications   

 - Berlin  Springer-Verlag  1980 
 - v, 258p. Index, Bibl. 
 - Lecture notes in Mathematics   791 .
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<br/><br/><label>Dewey Class. No.: </label>515.35  / B344.DO