共 50 条
- [31] PRECISE POSITIONS OF RADIO SOURCES .2. OPTICAL MEASUREMENTS ASTROPHYSICAL JOURNAL, 1970, 162 (02): : 391 - &
- [33] Optical astrometric positions of 59 northern ICRF radio sources Astronomy and Astrophysics, 2007, 476 (02): : 989 - 993
- [35] Determination of optical positions for 22 southern extragalactic radio sources ASTRONOMICAL JOURNAL, 2002, 123 (01): : 125 - 131
- [37] Accurate optical positions of extragalactic radio reference frame sources ASTRONOMICAL JOURNAL, 1999, 118 (05): : 2511 - 2525
- [38] A COMPARISON BETWEEN ACCURATE RADIO AND OPTICAL POSITIONS FOR 6 SOUTHERN-HEMISPHERE EXTRAGALACTIC SOURCES ASTRONOMICAL JOURNAL, 1989, 98 (01): : 49 - 53
- [39] OBSERVATIONS OF SOME RADIO SOURCES PREVIOUSLY IDENTIFIED WITH CLUSTERS OF GALAXIES AUSTRALIAN JOURNAL OF PHYSICS, 1967, 20 (06): : 725 - +
- [40] Optical spectra of four objects identified with variable radio sources Astronomy Letters, 2000, 26 : 339 - 343