TY - JOUR T1 - Improving User Experience for Passenger Information Systems. Prototypes and Reference Objects JF - IEEE Transactions on Professional Communication Y1 - 2013 A1 - Wirtz, S. A1 - Jakobs, E.-M VL - 56 SP - 120-137 UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6524067 ER -