@article{1186,
  author = {Bong Choi and Hao Liang and Xuemin Shen and Weihua Zhuang},
  title = {DCS: Distributed asynchronous clock synchronization in delay tolerant networks},
  year = {2012},
  journal = {IEEE Transactions on Parallel and Distributed Systems},
  volume = {23},
  number = {3},
  pages = {491-504},
  publisher = {IEEE},
}