Rockafellar, Tyrrell R <br/><br/>
Variational analysis 
R. Tyrrell Rockafellar, Roger J - B. Wets 
 - Berlin  Springer  1998 
 - VII, 725 p  fig  24 cm 
 - Grundlehren mathematischen Wissenschaften  317 .
<br/><br/><label>ISBN: </label>3540627723 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Convex sets and functions<br/>Subdifferential calculus