@article{10_4064_cm87_1_6,
     author = {M. Sango},
     title = {Behaviour of the first eigenvalue
of the $p${-Laplacian} in a domain with a hole},
     journal = {Colloquium Mathematicum},
     pages = {103--111},
     publisher = {mathdoc},
     volume = {87},
     number = {1},
     year = {2001},
     doi = {10.4064/cm87-1-6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm87-1-6/}
}