TY  - JOUR
AU  - Hild, P.
TI  - A sign preserving mixed finite element approximation for contact problems
JO  - International Journal of Applied Mathematics and Computer Science
PY  - 2011
SP  - 487
EP  - 498
VL  - 21
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IJAMCS_2011_21_3_a6/
LA  - en
ID  - IJAMCS_2011_21_3_a6
ER  -