%0 Journal Article %A Helmut Röhrl %T ...-degenerate singular integral equations and holomorphic affine bundles over compact RIEMANN surfaces. I. %J Commentarii mathematici Helvetici %D 1963 %P 84-120 %V 38 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMH_1963__38_139270/ %F CMH_1963__38_139270