Donder, Th. De. <br/><br/>
Theorie invariantive du calcul des variations / 
Th. De Donder. 
 - Paris :  Gauthier-Villars,  1930. 
 - xii, 109, pag. varia 98 p. : 
<br/><br/> Various pagings. 
<br/><br/><label>ISBN: </label>1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Calculus of variations.
<br/><br/><label>Dewey Class. No.: </label>517.4  / Th