@article{M2AN_2020__54_1_229_0, author = {Bonito, Andrea and Lei, Wenyu and Salgado, Abner J.}, title = {Finite element approximation of an obstacle problem for a class of integro{\textendash}differential operators}, journal = {ESAIM: Mathematical Modelling and Numerical Analysis }, pages = {229--253}, publisher = {EDP-Sciences}, volume = {54}, number = {1}, year = {2020}, doi = {10.1051/m2an/2019058}, mrnumber = {4055457}, language = {en}, url = {http://www.numdam.org/articles/10.1051/m2an/2019058/} }