%0 Journal Article %A Hans-Bert Rademacher %T Metrics with only finitely many isometry invariant geodesics. %J Mathematische Annalen %D 1989 %P 391-408 %V 284 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1989__284_4_164560/ %F MAN_1989__284_4_164560