Troutman, John L. <br/><br/>
Variational calculus with elementary convexity  / 

 - New York:  Springer-Verlag,  1983 
 - xiv, 365p. Illus. Bibl. Index 
 - Undergraduate texts in Mathematics .
<br/><br/><label>Dewey Class. No.: </label>515.64  / T861.VC