Cross, S., M. Sharples, G. Healing, and J. Ellis. “Distance Learners’ Use of Handheld Technologies: Mobile Learning Activity, Changing Study Habits, and the ‘Place’ of Anywhere Learning”. The International Review of Research in Open and Distributed Learning, Vol. 20, no. 2, Apr. 2019, doi:10.19173/irrodl.v20i2.4040.