@article{Cia-Cia-2009,
    author={Patrick Ciarlet and Philippe Ciarlet },
    title={Direct computation of stresses in planar linearized elasticity },
    doi={10.1142/s0218202509003711 },
    journal={Math. Models Meth. App. Sci. },
    year={2009 },
    volume={19 (7) },
    pages={1043--1064},
}