The HST survey of the B2 sample of radio-galaxies: Optical nuclei and the FR I/BL Lac unified schemeA. Capetti, A. Celotti, M. Chiaberge, H. R. de Ruiter, R. Fanti, R. Morganti and P. ParmaA&A, 383 1 (2002) 104-111DOI: https://doi.org/10.1051/0004-6361:20011714
