Challenges in scaling mobile learning applications: the example of quizzer

A. Giemza, Verheyen, P., and Hoppe, H. U., โ€œChallenges in scaling mobile learning applications: the example of quizzerโ€, in Wireless, Mobile and Ubiquitous Technology in Education (WMUTE 2012) IEEE Seventh International Conference on, 2012, pp. 287โ€“291.