Motivic decomposition of cellular Deligne-Mumford stacks, with Utsav Choudhury (preprint, v2: 29 February, 2012).

Notes from Alpbach Summer School on p-adic Periods (2010)

Draft of notes from the Alpbach Summer School on Motives, Periods and Transcendence. (Updated July 21, 2011.)

Draft of notes from the Alpbach Summer School on Motives, Periods and Transcendence (tex). (Updated July 21, 2011.)

Białynicki-Birula decomposition of Deligne-Mumford stacks (to appear in the Proceedings of the American Mathematical Society)