DCNET 2013, ICE-B 2013, OPTICS 2013 : Proceedings of the 4th International Conference on Data Communication Networking, 10 th International Conference on e-Business and 4th International Conference on Optical Communication Systems, Reykjavík, Iceland 29-31 July, 2013. Reykjavík : SciTePress - Science and Technology Publications, 2013. ISBN 978-989-8565-72-3. I*