@article{Shenar:6557,
      author        = "Shenar, T and Sana, H and Crowther, P A and Bostroem, K A
                       and Mahy, L and Najarro, F and Oskinova, L and Sander, A A
                       C",
      title         = "{Constraints on the multiplicity of the most massive stars
                       known: R136 a1, a2, a3, and c}",
      year          = "2023",
}