@article{9196,
  author = {C. Zhang and S. Kwok},
  title = {IRAS spectroscopic observations of young planetary nebulae},
  year = {1989},
  journal = {Astronomy and Astrophysics},
  volume = {237},
  pages = {479-494},
  url = {http://articles.adsabs.harvard.edu/full/1990A\%26A...237..479Z},
  note = {JILA Pub. 4476},
}