TY - JOUR AU - Blaise Bourdin TI - Numerical implementation of the variational formulation for quasi-static brittle fracture JO - Interfaces and free boundaries PY - 2007 SP - 411 EP - 430 VL - 9 IS - 3 UR - http://geodesic.mathdoc.fr/articles/10.4171/ifb/171/ DO - 10.4171/ifb/171 ID - 10_4171_ifb_171 ER -