On-line 3CRR database: reference

Reference(s) for the field ``Best' radio map' for object 3C337

• Best P.N., Longair M.S., Röttgering H.J.A., 1997, MNRAS, 292, 758
• Pedelty J.A., Rudnick L., McCarthy P.J., Spinrad H., 1989, AJ, 98, 1232