IT Revolutions : Third International ICST Conference, Cordoba, Spain, March 23-25, 2011, Revised Selected Papers - Matías Liñán Reyes, José M. Flores Arias, Juan J. González de la Rosa, Josef Langer, Francisco J. Bellido Outeiriño, Antonio Moreno-Munñoz ((Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering))