Sagan, Hans <br/><br/>
Introduction to the calculus of variations 
Hans Sagan 
 - 1st ed 
 - Mineola, NY  Dover Publications  1992 
 - xvi, 449 p. : ill. ; 22 cm 
<br/><br/> Originally published: New York : McGraw-Hill, 1969, in series: International series in pure and applied mathematics. Includes bibliographical references (p. 434-437) and index 
<br/><br/><label>ISBN: </label>9780486673660 
<br/><br/><label>ISSN: </label>92002356 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations
<br/><br/><label>Dewey Class. No.: </label>515.64 SAG