@article{HeuerMenzelMilonni2015,
  author    = {A. Heuer and R. Menzel and P. W. Milonni},
  title     = {Induced Coherence, Vacuum Fields, and Complementarity in Biphoton Generation},
  journal   = {Physical review letters},
  volume    = {114},
  number    = {5},
  doi       = {10.1103/PhysRevLett.114.053601},
  year      = {2015},
}