1. Cubes with knotted holes;Bing, R. H.;Trans. Amer. Math. Soc.,1971
2. Essential embeddings of annuli and Möbius bands in 3-manifolds;Cannon, James W.;Trans. Amer. Math. Soc.,1976
3. Lecture Notes in Mathematics;Johannson, Klaus,1979
4. Knoten und Vollringe;Schubert, Horst;Acta Math.,1953
5. Infinitely divisible elements in 3-manifold groups;Shalen, Peter B.,1975