1. Wang Y, Jia X, Lee HK (2003) An indoors wireless positioning system based on wireless local area network infrastructure, pp 22–25
2. Sun L (2005) Wireless sensor network, pp 131–140
3. Lessmann S (2008) Benchmarking classification models for software defect prediction: a proposed framework and novel findings. IEEE Trans Softw Eng 34(4):485–496
4. Harter A, Hopper A, Steggles P et al (2002) The anatomy of a context-aware application, pp 59–68
5. Girod L, Estrin D (2001) Robust range estimation using acoustic and multimodal sensing, June, pp 1312–1320