Beltzer, A.I. <br/><br/>
Variational and finite element methods  A Symbolic computation approach 
by A I Beltzer 
 - Berlin  Springer-Verlag  1990 
 - xi, 254p 
<br/><br/><label>ISBN: </label>3540515984 
<br/><br/><label>Dewey Class. No.: </label>620.00151  / N90;1