@article{Del-Bon-2015,
    author={Gabriel Delgado and Marc Bonnet },
    title={The topological derivative of stress-based cost functionals in 
           anisotropic elasticity },
    doi={10.1016/j.camwa.2015.03.010 },
    journal={Computer and Mathematics with Applications },
    year={2015 },
    volume={69 },
    pages={1144--1166},
}