Ioannis Pavlidis Jonathan Dowdall Nanfei Sun Colin Puri Jin Fei Marc Garbey Interacting with human physiology. 150-170 2007 108 Computer Vision and Image Understanding 1-2 http://dx.doi.org/10.1016/j.cviu.2006.11.018 db/journals/cviu/cviu108.html#PavlidisDSPFG07