Lanczos, Cornelius,  1893-1974. <br/><br/>
The variational principles of mechanics / 
Cornelius Lanczos 
 - Toronto :  University of Toronto Press,  1949, [reprinted 1952] 
 - xxv, 307 p. :  ill. ;  23 cm. 
 - Mathematical expositions,  no. 4 .
<br/><br/>Bibliography: p. 365-366. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mechanics, Analytic.
<br/><br/><label>Dewey Class. No.: </label>531  / LAV 1952