1. Indoor LBS And Hyper - Local Content Is the Next Gold Rush for Mobile Commerce, 2010, (http://www.indoorlbs.com/2010/06/indoor-lbs-and-hyper-local-content-is.html). (accessed Oct. 2012).
2. Towards mobile phone localization without war-driving;Constandache,2010
3. Human activity recognition via an accelerometer-enabled-smartphone using kernel discriminant analysis;Khan,2010
4. Kernel-based positioning in wireless local area networks;Kushki;IEEE Trans. Mob. Comput.,2007
5. Activity recognition using cell phone accelerometers;Kwapisz,2010