SN2015bh: the end of a star or an "impostor" supernova?

Based on the article "SN 2015bh: NGC 2770’s 4th supernova or a luminous blue variable on its way to a Wolf-Rayet star?",
by C.C. Thöne et al.

Published in Astronomy & Astrophysics, 2017, 599, A129