@article{JSVaidyaCOSE10,
  title = "Anonymization Models for Directional Location Based Service
Environments",
  author = "Heechang Shin and Jaideep Vaidya and Vijayalakshmi
Atluri",
  journal = "Computers and Security",
  volume = 29,
  number = 1,
  month = feb,
  year = "2010",
  pages = "59--73"
}