X. D. Tang,
C. Henkel,
K. M. Menten,
Y. Gong,
S. Martín,
S. Mühle,
S. Aalto,
S. Muller,
S. García-Burillo,
S. Levshakov et al. (9 more)
A&A, 629 (2019) A6
Published online: 22 August 2019
DOI: 10.1051/0004-6361/201935603
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