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- [2] REDSHIFTS OF QUASI-STELLAR RADIO SOURCES 3C 47 + 3C 147 ASTROPHYSICAL JOURNAL, 1964, 139 (02): : 781 - &
- [6] ON MEASUREMENT AND INTERPRETATION OF ABSORPTION FEATURES IN SPECTRUM OF QUASI-STELLAR OBJECT 3C 191 ASTROPHYSICAL JOURNAL, 1966, 144 (01): : 447 - &