@misc{indiciaeda5e7404b861,
  title = {New approaches to nonlinear diffractive field propagation.},
  author = {P T Christopher and K J Parker},
  year = {1991},
  doi = {10.1121/1.401274},
  url = {https://pubmed.ncbi.nlm.nih.gov/1880298/},
  note = {Source identifier: 1880298}
}