1. J.O. Berge, Some knots with surgeries giving lens spaces, unpublished manuscript.
2. Spherical space forms and Dehn filling;Bleiler;Topology,1996
3. Trees, valuations, and the Bieri–Neumann–Strebel invariant;Brown;Invent. Math.,1987
4. Genus of alternating link types;Crowell;Ann. of Math. (2),1959
5. Nonalternating links, Illinois;Crowell;J. Math.,1959