Multiplicity of Galactic luminous blue variable stars L. Mahy, C. Lanthermann, D. Hutsemékers, J. Kluska, A. Lobel, R. Manick, B. Miszalski, M. Reggiani, H. Sana and E. Gosset A&A, 657 (2022) A4 Published online: 20 December 2021 DOI: 10.1051/0004-6361/202040062