Scherp, Ansgar, Knip, Florian, Bikar, Christian, Pfister, Bernd, Opitz, Bernd, Sztyler, Timo, AND Jess, Michael. " Investigating the Usability of a Mobile App for Finding and Exploring Places and Events" International SERIES on Information Systems and Management in Creative eMedia (CreMedia) [Online], Number 2014/1 (17 February 2015)