TY - JOUR AU - Leonardo Ranzani AU - Jose Aumentado C2 - Physical Review A DA - 2015-02-10 LA - en PB - Physical Review A PY - 2015 TI - Graph-based analysis of nonreciprocity in coupled-mode systems UR - https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=916207 ER -