Stratified Morse Theory, unpublished expository essay written for Part III of the Cambridge Tripos, 2005.
The Organization of Intrinsic Computation: Complexity-Entropy Diagrams and the Diversity of Natural Information Processing, with DP Feldman and JP Crutchfield, Chaos 18(4), Dec 2008, 59-73.
Automated Pattern Detection—An Algorithm for Constructing Optimally Synchronizing Multi-Regular Language Filters, with JP Crutchfield, Theoretical Computer Science 359 (2006), 306-328.