Algorithms for Sensor Systems 11th International Symposium on Algorithms and Experiments for Wireless Sensor Networks, ALGOSENSORS 2015, Patras, Greece, September 17-18, 2015, Revised Selected Papers - Bose, Prosenjit; Gąsieniec, Leszek Antoni; Römer, Kay; Wattenhofer, Roger (Springer International Publishing : Imprint: Springer, 2015)