"Functoriality for the su(3) Khovanov homology", Algebr. Geom. Topol. 9 (2009), no. 2, 625–690. pdf

"Fixing the functoriality of Khovanov homology", with S. Morrison and K. Walker. Geom. Topol. 13 (2009), no. 3, 1499-1582. pdf

"Functoriality for the su(3) Khovanov homology", Special session on categorification, AMS/MAA Joint Meetings in DC, Jan 2009. slides

"Freedom or death: a prisoner problem", R-MC Math Seminar, October 2009.

"The Google matrix", R-MC Math Seminar, May 2009.

"Knotty math and the Jones polynomial", R-MC Math Seminar, Nov 2009. slides