Miller, Willard- <br/><br/>
Symmetry and separation of variables / 
Willard Miller, Jr. ; with a foreword by Richard Askey 
 - Reading, Mass. :  Addison-Wesley,  1977 
 - xxx, 285 p. :  24 cm. 
 - Encyclopedia of mathematics and its applications ; v.4. .
<br/><br/> Includes index. 
<br/><br/>p. 275-280. 
<br/><br/><label>ISBN: </label>0201135035 
<br/><br/><label>LCCN: </label>77-012572 //r85 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Symmetry (Physics)<br/>Functions, special<br/>Differential equations, Partial--Numerical solutions<br/>Separation of variables