Normal All Pseudo-Anosov Subgroups of Mapping Class Groups, in Geometry and Topology
Bestvina's normal form complex and the homology of Garside groups, with Ruth Charney, John Meier
Greedy optimal homotopy and homology generators with Jeff Erickson
Splitting (complicated) surfaces is hard with Erin Chambers, Eric Colin de Verdiere, Jeff Erickson, and Francis Lazarus