Artzner Phillipe <br/><br/>
Gradients,Subgradients and Economic Equilibria 
Artzner Phillipe, Ostroy Josef 
 - Strasbourg  Strasbourg  1981 
 - 22 p. 
<br/><br/> Series de Math.Pures et appl.I.R.M.A. Univer.Louis Pasteur.Depart.de Math. 
<br/><br/><label>Dewey Class. No.: </label>517.51