1. Hodges MR, Pollack ME (2007) An ‘object-use fingerprint’: The use of electronic sensors for human identification. In: Proc UbiComp, pp 289–303
2. Hu DH, Pan SJ, Zheng VW, Liu NN, Yang Q (2008) Real world activity recognition with multiple goals. In: Proc UbiComp. ACM, New York, pp 30–39. doi: 10.1145/1409635.1409640
3. Hu DH, Yang Q (2008) Cigar: Concurrent and interleaving goal and activity recognition. In: Fox D, Gomes CP (eds) Proc AAAI. AAAI Press, Menlo Park, pp 1363–1368
4. Lecture notes in computer science;DJ Patterson,2003
5. Lecture notes in computer science;EM Tapia,2004