%0 Journal Article %A Montesinos Amilibia, José María %A Hilden, Hugh Michael %A Lozano Imízcoz, María Teresa %T Universal knots %D 1983 %@ 0273-0979 %U https://hdl.handle.net/20.500.14352/64699 %X In an unpublished preprint W. Thurston showed the existence of a six component link in the 3-sphere such that every three-manifold can be expressed as a branched cover of the 3-sphere branched over this link. He called links with this property "universal links'' and asked if a universal knot exists. The authors confirm this by showing that any link can be embedded in the branch locus of a 3-sphere branched covering of a 3-sphere branched over a knot %~