@article{Guerreiro08ieeemultimedia,
  title={From Tapping to Touching: Making Touch Screens Accessible to Blind Users},
  author={Guerreiro, T. and Nicolau, H. and Jorge, J.A. and others},
  journal={Multimedia, IEEE},
  volume={15},
  number={4},
  pages={48--50},
  year={2008},
  publisher={IEEE}
}