%0 Journal Article %A Damascelli, Lucio %T Comparison theorems for some quasilinear degenerate elliptic operators and applications to symmetry and monotonicity results %J Annales de l'I.H.P. Analyse non linéaire %D 1998 %P 493-516 %V 15 %N 4 %I Gauthier-Villars %G en %F AIHPC_1998__15_4_493_0