Knobel, Roger  . <br/><br/>
Introduction to the mathematical theory of waves /  
by Roger Knobel. 
 - USA :   American Mathematical Society ,   1989 
 - Vol 3 :  
<br/><br/><label>ISBN: </label>0-8218-2039-7 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Waves motion, Theory of
<br/><br/><label>Dewey Class. No.: </label>B  / M9