Walsh, J. L.  1895- <br/><br/>
The location of critical points of analytic and harmonic functions / 
by J.L. Walsh 
 - New York :  American Mathematical Society,  1950 
 - viii, 383 p. ;  26 cm. 
 - Colloquium publications,  v. 34 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Functions<br/>Harmonic functions