@article{M2AN_2021__55_3_939_0,
     author = {Chaumont-Frelet, Th\'eophile and Verf\"urth, Barbara},
     title = {A generalized finite element method for problems with sign-changing coefficients},
     journal = {ESAIM: Mathematical Modelling and Numerical Analysis },
     pages = {939--967},
     year = {2021},
     publisher = {EDP-Sciences},
     volume = {55},
     number = {3},
     doi = {10.1051/m2an/2021007},
     mrnumber = {4253164},
     zbl = {1477.65201},
     language = {en},
     url = {https://www.numdam.org/articles/10.1051/m2an/2021007/}
}