@article{Liutpds13,
  author    = {Wenping Liu and
               Hongbo Jiang and
               Xiang Bai and
               Guang Tan and
               Chonggang Wang and
               Wenyu Liu and
               Kechao Cai},
  title     = {Distance Transform-Based Skeleton Extraction and Its Applications
               in Sensor Networks},
  journal   = {IEEE Trans. Parallel Distrib. Syst.},
  volume    = {24},
  number    = {9},
  year      = {2013},
  pages     = {1763-1772}
}