@article{1258138155, author = {Alencar, Hil\'ario and do Carmo, Manfredo and Marques, Fernando}, title = {Upper bounds for the first eigenvalue of the operator $L\sb r$ and some applications}, journal = {Illinois J. Math.}, volume = {45}, number = {4}, year = {2001}, pages = { 851-863}, language = {en}, url = {http://dml.mathdoc.fr/item/1258138155} }
Alencar, Hilário; do Carmo, Manfredo; Marques, Fernando. Upper bounds for the first eigenvalue of the operator $L\sb r$ and some applications. Illinois J. Math., Tome 45 (2001) no. 4, pp. 851-863. http://gdmltest.u-ga.fr/item/1258138155/