Tucker R. Balch Jay Summet Douglas S. Blank Deepak Kumar Mark Guzdial Keith J. O'Hara Daniel Walker Monica Sweat Gaurav Gupta Stewart Tansley Jared Jackson Mansi Gupta Marwa Nur Muhammad Shikha Prashad Natasha Eilbert Ashley Gavin 5-9 2008 7 IEEE Pervasive Computing 2 http://doi.ieeecomputersociety.org/10.1109/MPRV.2008.29 db/journals/pervasive/pervasive7.html#BalchSBKGOWSGTJGMPEG08