@article {IOPORT.50162322,
    author       = {Michelis, Daniel and M\"uller, J\"org},
    title        = {The audience funnel: observations of gesture based interaction with multiple large displays in a city center},
    year         = {2011},
    journal      = {Int. J. Hum. Comput. Interaction},
    volume       = {27},
    number       = {6},
    pages        = {562-579},
    doi          = {10.1080/10447318.2011.555299},
    identifier   = {50162322},
}