Perttula A, Multisilta J, Tuomi P. Persuasive Mobile Device Sound Sensing in a Classroom Setting. Int. J. Interact. Mob. Technol. [Internet]. 2013 Jan. 10 [cited 2024 Sep. 27];7(1):pp. 16-24. Available from: https://online-journals.org/index.php/i-jim/article/view/2262