@article{AIHPC_2022__39_3_529_0, author = {Mazzoleni, Dario and Trey, Baptiste and Velichkov, Bozhidar}, title = {Regularity of the optimal sets for the second {Dirichlet} eigenvalue}, journal = {Annales de l'I.H.P. Analyse non lin\'eaire}, pages = {529--573}, volume = {39}, number = {3}, year = {2022}, doi = {10.4171/aihpc/14}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4171/aihpc/14/} }