%0 Journal Article %A E. Bujalance %T On the Structure of the Automorphism Group of a Compact Klein Surface with N Boundary Components (1 < N < 4). %J Mathematische Annalen %D 1985 %P 29-34 %V 270 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1985__270_182985/ %F MAN_1985__270_182985