TY  - JOUR
AU  - Falk, Richard S.
TI  - Approximation of an elliptic boundary value problem with unilateral constraints
JO  - ESAIM: Mathematical Modelling and Numerical Analysis 
PY  - 1975
SP  - 5
EP  - 12
VL  - 9
IS  - R2
PB  - Dunod
PP  - Paris
UR  - http://geodesic.mathdoc.fr/item/M2AN_1975__9_2_5_0/
LA  - en
ID  - M2AN_1975__9_2_5_0
ER  -