@article{10729,
  author = {D. Fahey and L. Schearer and W. Parks},
  title = {Alignment of ions in Penning collisions},
  year = {1979},
  journal = {Physical Review A},
  volume = {20},
  pages = {1372-1375},
  month = {Jan-10-1979},
  issn = {0556-2791},
  url = {http://link.aps.org/doi/10.1103/PhysRevA.20.1372},
  doi = {10.1103/PhysRevA.20.1372},
}