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Silva, Paula Alexandra and Leitao, Roxanne and Kerwin, Maureen (2017) Investigating activity zones on smartphones: An empirical study with older adults. In: Atas do EPCGI 2017 – 24º Encontro Português de Computação Gráfica e Interação. IEEE. ISBN 978-1-5386-2079-3
Leitao, Roxanne and Silva, Paula Alexandra (2013) A Study of Novice Older Adults and Gestural Interaction on Smartphones. In: 3rd Workshop on Mobile Accessibility, HCI'13, 28 April 2013, Paris.
Leitao, Roxanne and Silva, Paula Alexandra (2012) Target and Spacing Sizes for Smartphone User Interfaces for Older Adults: Design Patterns Based on an Evaluation with Users. In: 19th Conference on Pattern Languages of Programs, 19-21 October 2012, Tucson, Arizona.