Rektorys, Karel <br/><br/>
Variational methods in mathematics, science, and engineering / 
Karel Rektorys 
 - Dordrecht :  D. Reidel,  1977 
 - 571 p. ;  26 cm. 
<br/><br/> 'Translated from the Czech by Michael Basch, 1975'- verso 
<br/><br/><label>ISBN: </label>9027704880 
<br/><br/><label>LCCN: </label>74-80530 
<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