@article{Etoka:2009am,
  author = "Etoka, Sandra",
  title = "{The structure of the Proto-Planetary Nebula OH 231.8+4.2 as revealed by VLTI and MERLIN interferometric observations }",
  doi = "10.22323/1.072.0063",
  journal = "PoS",
  year = 2009,
  volume = "IX EVN Symposium",
  pages = "063"
}