@article{116106,
  author = {S Kwok and K Volk and B Hrivnak},
  title = {Candidates for bipolar proto-planetary nebulae, in Astrophysics with Infrared Arrays, ed. by R. Elston},
  year = {1991},
  number = {14},
  month = {1991-01-01},
  publisher = {ASP Conference Series},
  language = {en},
}