Scott F. Midkiff Luiz A. DaSilva Allen B. MacKenzie 91-93 2009 8 IEEE Pervasive Comput. 3 https://doi.org/10.1109/MPRV.2009.46 http://doi.ieeecomputersociety.org/10.1109/MPRV.2009.46 db/journals/pervasive/pervasive8.html#MidkiffDM09