Evolutionary study of complex organic molecules in high-mass star-forming regions A. Coletta, F. Fontani, V. M. Rivilla, C. Mininni, L. Colzi, Á. Sánchez-Monge and M. T. Beltrán A&A, 641 (2020) A54 Published online: 08 September 2020 DOI: 10.1051/0004-6361/202038212