MY Camelopardalis, a very massive merger progenitorJ. Lorenzo, I. Negueruela, A. K. F. Val Baker, M. García, S. Simón-Díaz, P. Pastor and M. Méndez MajuelosA&A, 572 (2014) A110DOI: https://doi.org/10.1051/0004-6361/201424345