Spiegel, Murray R <br/><br/>
Applied differential equations 

 - 3rd 
 - New Jersey  Prentice Hall  1981 
 - xvi,654,A-55[8]p p. 
<br/><br/><label>ISBN: </label>0-13-040097-1 
<br/><br/><label>Subjects--Index Terms: </label>Differential equations