Bonnans, Joseph Frédéric. <br/><br/>
Pontryagin's principles in the control of semilinear ellipt-ic variational inequalities / Joseph Frédéric Bonnans, Dan -Tiba. 

 - Le Chesnay, France : tique. 
 - [18]p. 
 - Rapports de recherche; No. 1134. .