Yoshida, Norio <br/><br/>
Oscillation theory of partial differential equations / 
Norio Yoshida 
 - Singapore ; New Jersey :  World Scientific Publishing Company ,  c2008 
 - xi, 326 p. :  ill. ;  24 cm. 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9789812835437 9812835431 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations<br/>Differential equations--Oscillation theory