@article{10_4153_CJM_2010_042_8,
     author = {Legendre, Eveline},
     title = {Extrema of {Low} {Eigenvalues} of the {Dirichlet{\textendash}Neumann} {Laplacian} on a {Disk}},
     journal = {Canadian journal of mathematics},
     pages = {808--826},
     year = {2010},
     volume = {62},
     number = {4},
     doi = {10.4153/CJM-2010-042-8},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-042-8/}
}