@article{CRMATH_2017__355_4_472_0,
     author = {Abdulle, Assyr and Huber, Martin E. and Lemaire, Simon},
     title = {An optimization-based numerical method for diffusion problems with sign-changing coefficients},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {472--478},
     publisher = {Elsevier},
     volume = {355},
     number = {4},
     year = {2017},
     doi = {10.1016/j.crma.2017.02.010},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2017.02.010/}
}