1. De Gruyter Studies in Mathematics;Burde, Gerhard,1985
2. Surgery and foliations of knot complements;Cantwell, John;J. Knot Theory Ramifications,1993
3. \bysame, Topological obstructions to smoothing proper foliations (in preparation).
4. S. Fenley, Depth one foliations in hyperbolic 3-manifolds, Ph.D. thesis, Princeton Univ., 1990.
5. Foliations and the topology of 3-manifolds;Gabai, David;J. Differential Geom.,1983