@article{even:service_chain_approx:2016:TR,
  author    = {Guy Even and Matthias Rost and
               Stefan Schmid},
  title     = {An Approximation Algorithm for Path Computation and Function Placement in SDNs},
  journal   = {CoRR},
  volume    = {abs/1603.09158},
  year      = {2016},
  ee        = {http://arxiv.org/abs/1603.09158}
}