1. 3-manifold knot genus is NP-complete;Agol,2002
2. Face pairing graphs and 3-manifold enumeration;Burton;J. Knot Theory Ramifications,2004
3. Converting between quadrilateral and standard solution sets in normal surface theory;Burton;Algebr. Geom. Topol.,2009
4. The complexity of the normal surface solution space;Burton,2010
5. Benjamin A. Burton, Extreme cases in normal surface enumeration, in preparation, 2010.