%0 Journal Article %A Feustel, C. D. %T On Embedding Essential Annuli in M 3 %J Canadian journal of mathematics %D 1974 %P 1341-1350 %V 26 %N 6 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-127-x/ %R 10.4153/CJM-1974-127-x %F 10_4153_CJM_1974_127_x