Schwabik, S., et al <br/><br/>
Differential & integral equations  boundary value problems & adjoints 
S. Schwabik, et al 
 - Dordrecht  D. Reidel  1979 
 - 248 
 - Czechslovak academy of sciences .
<br/><br/><label>ISBN: </label>9027708029 
<br/><br/><label>Dewey Class. No.: </label>10.02+10.08  / SCHW