Rektorys, Karel. <br/><br/>
Variational methods in mathematics, science, and engineering / 
Karel Rektorys ; translated from the Czech by Michael Basch. 
 - 2nd ed. 
 - Boston :  D. Reidel Publishing Company,  1980. 
 - 571 p. :  ill. ;  27 cm. 
<br/><br/> Includes index. 
<br/><br/>Bibliography: p. 565-566. 
<br/><br/><label>ISBN: </label>9027704880 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.<br/>Hilbert space.<br/>Differential equations--Numerical solutions.<br/>Boundary value problems--Numerical solutions.