@article{11314,
  author = {John Cooper},
  title = {Broadening of Isolated Lines in the Impact Approximation Using a Density Matrix Formulation},
  year = {1967},
  journal = {Reviews of Modern Physics},
  volume = {39},
  pages = {167-177},
  month = {1967-01},
  issn = {0034-6861},
  doi = {10.1103/RevModPhys.39.167},
}