A.Smailagic, D.P.Siewiorek, J.Anhalt, F.Gemperle, D.Salber, S.Weber, J.Beck, J.Jennings. (2001) Towards Context Aware Computing: Experiences and Lessons Learned, IEEE Journal on Intelligent Systems. These authors have proposed a distraction matrix in which they classify the time needed for a distraction (from a snap (extremely small amount of time) to an extended time) and look at the categories of information, communication, and creation with respect to these distractions.