@misc{soberon-2016-graph-homomorphisms-multiplicities,
  title = {{Computing the Partition Function for Graph Homomorphisms with Multiplicities}},
  author = {Alexander Barvinok and Pablo Soberón},
  year = {2016},
  eprint = {1406.1771},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/1406.1771},
  note = {J. Combin. Theory Ser. A 137, 1–26.}
}