%0 Journal Article %A Ana-Maria Matei %T The effect of perturbations on the first eigenvalue of the $ \mathbf{p}$-Laplacian %J Comptes Rendus. Mathématique %D 2002 %P 255-258 %V 335 %N 3 %I Elsevier %R 10.1016/S1631-073X(02)02464-0 %G en %F CRMATH_2002__335_3_255_0