Online everywhere: evolving mobile instant messaging practices. - Donald J. Patterson; Christopher J. O. Baker; Xianghua Ding; Samuel J. Kaufman; Kah Liu; Andrew Zaldivar (UbiComp, 2008)

An Ecosystem for Learning and Using Sensor-Driven IM Status Messages. - Donald J. Patterson; Xianghua Ding; Samuel J. Kaufman; Kah Liu; Andrew Zaldivar (IEEE Pervasive Comput., 2009)