TY  - JOUR
AU  - Renaud, A.
AU  - Cohen, G.
TI  - An extension of the auxiliary problem principle to nonsymmetric auxiliary operators
JO  - ESAIM: Control, Optimisation and Calculus of Variations
PY  - 1997
SP  - 281
EP  - 306
VL  - 2
PB  - EDP-Sciences
UR  - http://www.numdam.org/item/COCV_1997__2__281_0/
LA  - en
ID  - COCV_1997__2__281_0
ER  -