Asymmetrical nebula of the M33 variable GR290 (WR/LBV) Olga V. Maryeva, Gloria Koenigsberger, Sergey V. Karpov, Tatiana A. Lozinskaya, Oleg V. Egorov, Corinne Rossi, Massimo Calabresi and Roberto F. Viotti A&A, 635 (2020) A201 Published online: 03 April 2020 DOI: 10.1051/0004-6361/201936840