Molecules in bipolar proto-planetary nebulaeP. M. Woods, L.-Å. Nyman, F. L. Schöier, A. A. Zijlstra, T. J. Millar and H. OlofssonA&A, 429 3 (2005) 977-992DOI: https://doi.org/10.1051/0004-6361:20034388
