@article{COCV_2017__23_3_869_0,
     author = {Mazzoleni, Dario and Zucco, Davide},
     title = {Convex combinations of low eigenvalues, {Fraenkel} asymmetries and attainable sets},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {869--887},
     publisher = {EDP-Sciences},
     volume = {23},
     number = {3},
     year = {2017},
     doi = {10.1051/cocv/2016017},
     mrnumber = {3660452},
     zbl = {1422.47024},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/cocv/2016017/}
}