%0 Journal Article %A Azeddine Baalal %A Wolfhard Hansen %T Nonlinear perturbation of balayage spaces %J Annales Fennici Mathematici %D 2002 %P 163-172 %V 27 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AFM_2002_27_1_a12/ %G en %F AFM_2002_27_1_a12