Kandeepan Sithamparanathan Mario Marchese Personal Satellite Services, International Conference, PSATS 2009, Rome, Italy, March 18-19, 2009, Revised Selected Papers 15 http://dx.doi.org/10.1007/978-3-642-04260-7 2009 978-3-642-04259-1 PSATS Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering Springer db/conf/psats/psats2009.html