@article{4786,
  author = {L. Rosenberg},
  title = {Second-order correction to the Bloch-Nordsieck sum rule},
  year = {1991},
  journal = {Physical Review A},
  volume = {43},
  pages = {1324-1330},
  month = {Jan-02-1991},
  issn = {1050-2947},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.43.1324},
  doi = {10.1103/PhysRevA.43.1324},
}