@inproceedings{AlAkkadRamirezBodenetal.2014,
  author    = {Amro Al-Akkad and Leonardo Ramirez and Alexander Boden and Dave W. Randall and Andreas Zimmermann},
  title     = {Help beacons: design and evaluation of an ad-hoc lightweight s.o.s. system for smartphones},
  series = {CHI Conference on Human Factors in Computing Systems, CHI'14, Toronto, ON, Canada, April 26 - May 01, 2014},
  publisher = {ACM},
  isbn      = {978-1-4503-2473-1},
  doi       = {10.1145/2556288.2557002},
  pages     = {1485 -- 1494},
  year      = {2014},
  language  = {en}
}