%0 Journal Article %A Gordon, C. Mca. %A Litherland, R. A. %A Murasugi, K. %T Signatures of Covering Links %J Canadian journal of mathematics %D 1981 %P 381-394 %V 33 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-032-3/ %R 10.4153/CJM-1981-032-3 %F 10_4153_CJM_1981_032_3