@article{UPS-TVT-2008,
  author = {Xiuzhen Cheng and Haining Shu and Qilian Liang and David Hung-Chang Du},
  title = {Silent Positioning in Underwater Acoustic Sensor Networks},
  journal = {IEEE Transactions on Vehicular Technology},
  volume = {57},
  number = {3},
  pages = {1756--1766},
  month = {May},
  year = {2008} 
}