@article{10485,
  author = {A. Mahan and S. Smith},
  title = {Observation of coherent excitation processes in e-H collisions},
  year = {1977},
  journal = {Physical Review A},
  volume = {16},
  pages = {1789-1792},
  month = {Jan-11-1977},
  issn = {0556-2791},
  doi = {10.1103/PhysRevA.16.1789},
}