On-line 3CRR database: reference
Reference(s) for the field ``Best' radio map' for object 3C20
- Hiltner P.R., Meisenheimer K., Röser H.J., Laing R.A., Perley R.A., 1994, A&A, 286, 25
- Fernini I., Burns J.O., Perley R.A., 1997, AJ, 114, 2292
- Hardcastle M.J., Alexander P., Pooley G.G., Riley J.M., 1997a, MNRAS, 288, 859