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Author: Bonfand, M. et al.; Genre: Journal Article; Issued: 2019-08; Keywords: stars: formation, ISM: individual objects: Sagittarius B2(N), astrochemistry, ISM: molecules, cosmic rays, molecular processes, Astrophysics - Astrophysics of Galaxies; Title: The complex chemistry of hot cores in Sgr B2(N): influence of cosmic-ray ionization and thermal history
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Bonfand et al. (2019) studied this question.