@article{DBLP:journals/tmc/GaryfalosA08,
  author    = {Anargyros Garyfalos and
               Kevin C. Almeroth},
  title     = {Coupons: A Multilevel Incentive Scheme for Information Dissemination
               in Mobile Networks},
  journal   = {IEEE Trans. Mob. Comput.},
  volume    = {7},
  number    = {6},
  year      = {2008},
  pages     = {792-804},
  ee        = {http://doi.ieeecomputersociety.org/10.1109/TMC.2008.37},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}