TY - JOUR AU - Chaumont-Frelet, Théophile AU - Verfürth, Barbara TI - A generalized finite element method for problems with sign-changing coefficients JO - ESAIM: Mathematical Modelling and Numerical Analysis PY - 2021 SP - 939 EP - 967 VL - 55 IS - 3 PB - EDP-Sciences UR - https://www.numdam.org/articles/10.1051/m2an/2021007/ DO - 10.1051/m2an/2021007 LA - en ID - M2AN_2021__55_3_939_0 ER -