@article{AIHPC_2021__38_5_1337_0, author = {Trey, Baptiste}, title = {Regularity of optimal sets for some functional involving eigenvalues of an operator in divergence form}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, pages = {1337--1371}, publisher = {Elsevier}, volume = {38}, number = {5}, year = {2021}, doi = {10.1016/j.anihpc.2020.11.002}, language = {en}, url = {http://www.numdam.org/articles/10.1016/j.anihpc.2020.11.002/} }