Full list: http://research.microsoft.com/~dcr/work/publications/publications.htm

TapGlance: Designing a Unified Smartphone Interface, Robbins, et al, DIS 2008

FaThumb: A Facet-based Interface for Mobile Search, Karlson, et al, SIGCHI 2006

ZoneZoom: Navigation for Smartphones with Recursive View Segmentation, Robbins, et al, AVI 2004

The Task Gallery: a 3D window manager, Robertson, et al, SIGCHI 2000

Three-dimensional widgets, Conner, et al, I3D 1992