@article{4656,
  author = {U. Thumm and David Norcross},
  title = {Evidence for very narrow shape resonances in low-energy electron-Cs scattering},
  year = {1991},
  journal = {Physical Review Letters},
  volume = {67},
  pages = {3495-3498},
  month = {Jan-12-1991},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.67.3495},
}