"The Escort System: A Safety Monitor for People Living with Alzheimer's." D.Taub, E.Lupton, R.Hinman, S.Leeb, J.Zeisel, S.Blackler. IEEE Pervasive Computing, vol. 99, no. PrePrints, 2010. http://www.computer.org/portal/web/csdl/doi/10.1109/MPRV.2010.44

"The BoPen: A Tangible Pointer Tracked in Six Degrees of Freedom." Daniel Taub. Master’s thesis, Massachusetts Institute of Technology, 2009. (NOTE: Reference #54 "Trackmate," should be attributed to Adam Kumpf.)