Publication
In: Wolfgang Narzt, Ann Gordon-Ross (editor). UBICOMM 2013, The Seventh International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies. International Conference on Mobile Ubiquitous Computing, Systems, Services and Technologies (UBICOMM-13) 7th located at NexTech 2013 September 29-October 3 Porto Portugal Pages 30-37 ISBN 978-1-61208-289-9 IARIA 9/2013.