Partition of unity enrichment for bimaterial interface cracks

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Modeling bimaterial interface cracks using the numerical manifold method (2013, methodology): “For bimaterial interface cracks, the following twelve terms [37]”
A singular edge-based smoothed finite element method (ES-FEM) for bimaterial interface cracks (2009, background): “[16] extended recently the XFEM to bimaterial interface cracks with a modification of enrichment functions.”
The extended finite element method for fracture in composite materials (2009, background): “In [25], the same problem was solved using the same enrichment functions, but only half the crack is modeled.”
A posteriori error estimation for extended finite elements by an extended global recovery (2008, methodology): “Since their inception, these methods have been used very successfully to model a variety of fracture problems in two [6] and three dimensions [7–11], for cohesive cracks [12], crack branching [13], interface failure [14], geometrically non-linear materials [15], contact, plasticity and dynamics [16]”
A 3D interface-enriched generalized finite element method for weakly discontinuous problems with complex internal geometries (2012, methodology): “The proposed method differs from conventional GFEM by assigning the generalized degrees of freedom to the interface nodes, i.e., nodes generated along the interface when creating integration subdomains, instead of the nodes of the original mesh.”