TY - CONF T1 - Challenges in scaling mobile learning applications: the example of quizzer T2 - Wireless, Mobile and Ubiquitous Technology in Education (WMUTE 2012) IEEE Seventh International Conference on Y1 - 2012 A1 - Adam Giemza A1 - Verheyen, Per A1 - H. Ulrich Hoppe JF - Wireless, Mobile and Ubiquitous Technology in Education (WMUTE 2012) IEEE Seventh International Conference on N1 - 00002 ER -