@article{AIHPC_2009__26_2_547_0,
     author = {Borisov, Denis and Freitas, Pedro},
     title = {Singular {Asymptotic} {Expansions} for {Dirichlet} {Eigenvalues} and {Eigenfunctions} of the {Laplacian} on {Thin} {Planar} {Domains}},
     journal = {Annales de l'I.H.P. Analyse non lin\'eaire},
     pages = {547--560},
     publisher = {Elsevier},
     volume = {26},
     number = {2},
     year = {2009},
     doi = {10.1016/j.anihpc.2007.12.001},
     mrnumber = {2504043},
     zbl = {1168.35401},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.anihpc.2007.12.001/}
}