D. Mazzoleni, A. Pratelli: Existence of minimizers for spectral problems J. Math. Pures Appl. 2013 M. Iversen, D. Mazzoleni: Minimising convex combinations of low eigenvalues ESAIM:COCV (Published paper) Vol. 20, N. 02, p. 442-459, 2014 D. Mazzoleni: Existence and regularity results for solutions of spectral problems (Ph.D. Thesis) 2014 D. Mazzoleni: Boundedness of minimizers for spectral problems in $\mathbb{R}^N$ Rend. Sem. Mat. Univ. Padova (Accepted) 2014 D. Mazzoleni: Recent existence results for spectral problems (Survey) 2014 D. Bucur, D. Mazzoleni: A surgery result for the spectrum of the Dirichlet Laplacian SIAM J. Math. Anal. Vol. 47, N. 6, p. 4451-4466, 2015 D. Bucur, D. Mazzoleni, A. Pratelli, B. Velichkov: Lipschitz regularity of the eigenfunctions on optimal domains Arch. Rat. Mech. Anal. 2015 D. Mazzoleni, D. Zucco: Convex combinations of low eigenvalues, Fraenkel asymmetries and attainable sets ESAIM: COCV 2017 D. Mazzoleni, S. Terracini, B. Velichkov: Regularity of the optimal sets for some spectral functionals Geom. Funct. Anal. 2017 D. Mazzoleni, S. Terracini, B. Velichkov: Regularity of the free boundary for the vectorial Bernoulli problem Analysis & PDE (Accepted Paper) 2018 D. Mazzoleni, B. Pellacci, G. Verzini: Asymptotic spherical shapes in some spectral optimization problems J. Math. Pures Appl. (Accepted Paper) 2018 L. Brasco, D. Mazzoleni: On principal frequencies, volume and inradius in convex sets NoDEA (Accepted Paper) 2019 D. Mazzoleni, B. Pellacci, G. Verzini: Quantitative analysis of a singularly perturbed shape optimization problem in a polygon (Preprint) 2019 D. Mazzoleni, A. Pratelli: Some estimates for the higher eigenvalues of sets close to the ball J. Spectral Theory 2019 M. Degiovanni, D. Mazzoleni: Optimization results for the higher eigenvalues of the $p$-Laplacian associated with sign-changing capacitary measures J. London Math. Soc. (Accepted Paper) 2019 D. Mazzoleni, B. Ruffini: A spectral shape optimization problem with a nonlocal competing term Calc. Var. PDE 2020 D. Mazzoleni, B. Pellacci, G. Verzini: Singular analysis of the optimizers of the principal eigenvalue in indefinite weighted Neumann problems SIAM J. Math. Anal. 2021 G. Buttazzo, F. P. Maiale, D. Mazzoleni, G. Tortone, B. Velichkov: Regularity of the optimal sets for a class of integral shape functionals (Preprint) 2022 D. Mazzoleni, B. Trey, B. Velichkov: Regularity of the optimal sets for the second Dirichlet eigenvalue Ann. Inst. H. Poincaré Anal. Non Linéaire 2022 D. Mazzoleni, G. Savaré: $L^2$-Gradient Flows of Spectral Functionals Discrete and Continuous Dynamical Systems 2022 I. Lucardesi, D. Mazzoleni, B. Ruffini: On a Cheeger--Kohler-Jobin inequality (Preprint) 2023 D. Mazzoleni, G. Tortone, B. Velichkov: On the dimension of the singular set in optimization problems with measure constraint (Preprint) 2023