Gerhard Leitner David Ahlström Martin Hitz Usability of Mobile Computing in Emergency Response Systems - Lessons Learned and Future Directions. 241-254 2007 conf/usab/2007 USAB http://dx.doi.org/10.1007/978-3-540-76805-0_20 db/conf/usab/usab2007.html#LeitnerAH07