@article{11526,
  author = {M. Blaha},
  title = {Collision Excitation of Positive Ions in pG Configurations: Transitions Between Levels of the P Term. Part II},
  year = {1969},
  journal = {Astronomy and Astrophysics},
  volume = {1},
  chapter = {42},
  url = {http://adsabs.harvard.edu/full/1969A\%26A.....1...42B},
}