Do Achievement systems undermine intrinsic player motivation? - Adam Zulkifly; Ian J. Lewis; Kristy de Salas (CGAMES, 2013)

Augmented exergaming: increasing exercise duration in novices. - Benjamin Geelan; Adam Zulkifly; Anthony Smith; Aran J. Cauchi-Saunders; Kristy de Salas; Ian J. Lewis (OZCHI, 2016)