With E.W. Chambers, J. Erickson and R. Ghrist, “Vietoris–Rips complexes of planar point sets,” *Discrete and Computational Geometry* (to appear)

With G. Carlsson and D. Morozov, “Zigzag persistent homology and real-valued functions.” *Proc. 25th Annual Symposium on Computational Geometry (SoCG)*, June 2009, pp.247–256

With M. Vejdemo-Johansson, “Persistent cohomology and circular coordinates,” *Proc. 25th Annual Symposium on Computational Geometry (SoCG)*, June 2009, pp.227–236

"A Weak Characterisation of the Delaunay Triangulation", *Geometriae Dedicata* 135(1), August 2008, pp. 39-64

With L.-H. Lim. "Tensor rank and the ill-posedness of the best low-rank approximation problem", *SIAM Journal on Matrix Analysis and Applications, Special Issue on Tensor Decompositions and Applications* 30(3), 2008, pp.1084–1127

With R. Ghrist, "Homological sensor networks", *Notices of the American Mathematical Society* 54(1), 10–17, January 2007

With R. Ghrist, A. Muhammad, "Blind swarms for coverage in 2-d", *Proc. Robotics: Science & Systems I*, MIT, Cambridge, MA, June 8–10, 2005