The variable sources responsible for the photometric behaviour of OJ 287 in the IR-optical-UV region during 1993-1996V. A. Hagen-Thorn, S. G. Marchenko, L. O. Takalo, A. Sillanpää, T. Pursimo, P. Boltwood, M. Kidger and J. N. Gonzalez-PerezAstron. Astrophys. Suppl. Ser., 133 3 (1998) 353-359DOI: https://doi.org/10.1051/aas:1998326