The double outburst of the unique object V838 Mon
  We present spectroscopic and photometric observations of the recent peculiar outburst of V838 Mon, carried out at Rozhen and Torun observatories. Our data cover a period of three months beginning just before the second eruption. The evolution of the outburst is divided into four phases. The changes of particular spectral features for each of these phases are shortly discussed. 
J.P. Osiwala (1), M. Mikolajewski (1), T. Tomov (1), C. Galan (1), J.   Nirski (1), D. Kolev (2) and I. Iliev (2) ((1) Centr...