BVRI photometry of BL Lacertae in 1993-1995 M. Maesano, F. Montagni, E. Massaro and R. Nesci Astron. Astrophys. Suppl. Ser., 122 2 (1997) 267-270 Published online: 15 April 1997 DOI: 10.1051/aas:1997101