Gabriel Sebastián, Pedro G. Villanueva, Ricardo Tesoriero. Multi-touch Collaborative DUI to create Mobile Services. Springer Book Chapter on Distributed User Interfaces: Designing Interfaces for the Distributed Ecosystem. Human–Computer Interaction Series. Gallud, José A.; Tesoriero, Ricardo; Penichet, Victor M.R. (Eds.). ISBN 978-1-4471-2270-8. 2011.
Link: http://link.springer.com/chapter/10.1007%2F978-1-4471-2271-5_16