@misc{indiciae78bd45eae37b,
  title = {Conservation law for multiple four-wave-mixing processes in a nonlinear optical medium.},
  author = {DL Hart and A Judy and TA Kennedy and R Roy and K Stoev},
  year = {1994},
  doi = {10.1103/physreva.50.1807},
  url = {https://pubmed.ncbi.nlm.nih.gov/9911074/},
  note = {Source identifier: 9911074}
}