CHEN, W., C. LEE, A. TAN, M. WETTASINGHE, and P. WONG. “FROM DEVICE CENTRIC TO PEOPLE CENTRIC UBIQUITOUS COMPUTING: PRE-SERVICE TEACHERS USING TECHNOLOGY ACROSS SPACES”. Research and Practice in Technology Enhanced Learning, vol. 7, no. 1, Mar. 2012, pp. 45-60, doi:10.58459/rptel.2012.745-60.