Discovery of methanimine (CH2NH) megamasers toward compact obscured galaxy nuclei M. D. Gorski, S. Aalto, J. Mangum, E. Momjian, J. H. Black, N. Falstad, B. Gullberg, S. König, K. Onishi, M. Sato and F. Stanley A&A, 654 (2021) A110 Published online: 19 October 2021 DOI: 10.1051/0004-6361/202141633