Hardy, Sandro and Kern, Angelika and Dutz, Tim and Weber, Christoph and Göbel, Stefan and Steinmetz, Ralf (2014):
What makes games challenging?: Considerations on how to determine the challenge posed by an exergame for balance training.
pp. 57-62, Proceedings of the 2014 ACM International Workshop on Serious Games, [Conference or Workshop Item]

Ellermeier, Wolfgang and Kern, Angelika and Schlittenlacher, Josef (2014):
A method to uncover salient auditory features of gear unit sounds.
Forum Acusticum 2014, Krakau, [Conference or Workshop Item]