Agarwal, R.P. <br/><br/>
Oscillation theory for second order linear, half-linear, superlinear and sublinear dynamic equations / 
R.P. Agarwal, Said R. Grace, Donal O'Regan. 
 - [S.l.] :  Springer,  2002. 
 - 686 p. ;  25 cm. 
<br/><br/><label>ISBN: </label>9048160952 9789048160952 
<br/><br/><label>Dewey Class. No.: </label>515.354