Henrot, A. and Zucco, D. 2019. Optimizing the first Dirichlet eigenvalue of the Laplacian with an obstacle. ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE. 19, 4 (Dec. 2019), 1535-1559. DOI:https://doi.org/10.2422/2036-2145.201702_003.