The HIFI spectral survey of AFGL 2591 (CHESS) - III. Chemical structure of the protostellar envelopeM. Kaźmierczak-Barthel, D. A. Semenov, F. F. S. van der Tak, L. Chavarría and M. H. D. van der WielA&A, 574 (2015) A71DOI: https://doi.org/10.1051/0004-6361/201424657
