The extraordinary optical outburst of ON 231 (W Com) in spring 1998
Journal article published in 1999 by
E. Massaro,
G. de Francesco,
M. Maesano,
F. Montagni,
R. Nesci,
G. Tosti,
M. Fiorucci,
M. Luciani,
L. O. Takalo,
A. Sillanpää,
S. Katajainen,
P. Keinänen,
T. Pursimo,
M. Villata,
C. M. Raiteri 
and other authors.
and other authors.
