%0 Journal Article %A Rolfsen, Dale %T Some Counterexamples in Link Theory %J Canadian journal of mathematics %D 1974 %P 978-984 %V 26 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-091-6/ %R 10.4153/CJM-1974-091-6 %F 10_4153_CJM_1974_091_6