On-line 3CRR database: reference

Reference(s) for the field `Optical position' for object 3C48

• Argue A.N., Clements E.D., Harvey G.M. Murray C.A., 1978. Modern Astrometry, IAU Coll. 48, p. 155, ed Prochazka F.V., Tucker R.H., Institute of Astronomy, Vienna.