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Wali, Esra and Oliver, Martin and Winters, Niall (2009) Are They Doing What They Think They're Doing?: Tracking and Triangulating Students' Learning Activities and Self Reports. In: Researching Mobile Learning: Frameworks, tools and research designs. Peter Lang, pp. 317-337.
Wali, Esra and Winters, Niall and Oliver, Martin (2008) Mobile Learning across contexts: Methodological considerations. In: Unknown. IADIS, Algarve, Portugal, pp. 98-105. ISBN 9789728924546
Wali, Esra and Winters, Niall and Oliver, Martin (2008) Maintaining, changing and crossing contexts : an activity theoretic reinterpretation of mobile learning. Research in learning technology, 16 (1). pp. 41-57. ISSN 2156-7069