%0 Journal Article %A Alexander Kushkuley %A Zalman Balanov %T A comparison principle and extension of equivariant maps. %J Manuscripta mathematica %D 1994 %P 239-264 %V 83 %N 3-4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1994__83_3-4_155959/ %F MM2_1994__83_3-4_155959