@book{key2,
  title = "Learning from Data Streams: Processing Techniques in Sensor Networks. Chapter 6: Querying of Sensor Data",
  author = "Niki Trigoni and Alexandre Guitton and Antonios Skordylis",
  year = "2007",
  booktitle = "Learning from Data Streams: Processing Techniques in Sensor Networks",
  chapter = "6",
  editor = "Joao Gama and Mohamed Medhat Gaber",
  month = "November",
  publisher = "Springer",
}