@Misc{ danpetsha01, author = { Danielli, Donatella and Petrosyan, Arshak and Shahgholian, Henrik }, title = { A singular perturbation problem for the p-Laplace operator }, journal = { Indiana Univ. Math. Jour. }, year = { 2001 }, pages = { }, URL = { http://cvgmt.sns.it/paper/60/ }, note = { cvgmt preprint} }