TY - JOUR AU - Z. Belhachmi AU - J.-M. Sac-Epée AU - S. Tahir TI - Locking-Free Finite Elements for Unilateral Crack Problems in Elasticity JO - Mathematical modelling of natural phenomena PY - 2009 SP - 1 EP - 20 VL - 4 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.1051/mmnp/20094101/ DO - 10.1051/mmnp/20094101 LA - en ID - MMNP_2009_4_1_a0 ER -