@article{211836,
  author = {Leonardo Ranzani and Jose Aumentado},
  title = {Graph-based analysis of nonreciprocity in coupled-mode systems},
  year = {2015},
  month = {2015-02-10},
  publisher = {Physical Review A},
  url = {https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916207},
  language = {en},
}