Harmonic function theory/ 
Axler,Sheldon, 
 - 2nd, ed. 
 - New York:  Springer,  1992. 
 - 259 p. 
<br/><br/><label>ISBN: </label>9780387952185 
<br/><br/><label>Dewey Class. No.: </label>515.53  / AXL/H