@article{4487,
  author = {L. Rosenberg},
  title = {N-photon bremsstrahlung in the soft-photon approximation},
  year = {1990},
  journal = {Physical Review A},
  volume = {42},
  pages = {5319-5327},
  month = {Jan-11-1990},
  issn = {1050-2947},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.42.5319},
  doi = {10.1103/PhysRevA.42.5319},
}