Martin Atzmüller, Andreas Hotho, Markus Strohmaier, Alvin Chin: Analysis of Social Media and Ubiquitous Data - International Workshops MSM 2010, Toronto, Canada, June 13, 2010, and MUSE 2010, Barcelona, Spain, September 20, 2010, Revised Selected Papers. Lecture Notes in Computer Science 6904, Springer 2011, ISBN 978-3-642-23598-6