REDSHIFTS AND MAGNITUDES OF EXTRAGALACTIC NEBULAE

[61] ROBERTSON HP, 1938, Z ASTROPHYS, V15, P69

[62] The minimum radiation visually perceptible [J]. ASTROPHYSICAL JOURNAL, 1917, 45 (01) : 60 - 64

[63] INHOMOGENEOUS STELLAR MODELS .2. MODELS WITH EXHAUSTED CORES IN GRAVITATIONAL CONTRACTION [J]. ASTROPHYSICAL JOURNAL, 1952, 116 (03) : 463 - 476

[64] THE 1ST 4 YEARS OF EXTRAGALACTIC RESEARCH WITH THE HALE 200-INCH TELESCOPE [J]. ASTRONOMICAL JOURNAL, 1954, 59 (05) : 180 - 182

[65] SANDAGE AR, 1954, PROCESSUS NUCLEAIRES, P254

[66] Effective wave lenghts of standard magnitudes color temperature and spectral type [J]. ASTROPHYSICAL JOURNAL, 1943, 98 (03) : 302 - 330

[67] Seyfert C. K., 1951, PASP, V63, P72

[68] Nuclear emission in spiral nebulae [J]. ASTROPHYSICAL JOURNAL, 1943, 97 (01) : 28 - 40

[69] THE DISTRIBUTION OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1954, 59 (08) : 285 - 304

[70] SHANE CD, 1950, P AM PHILOS SOC, V94, P13

[61] ROBERTSON HP, 1938, Z ASTROPHYS, V15, P69

[62] The minimum radiation visually perceptible [J]. ASTROPHYSICAL JOURNAL, 1917, 45 (01) : 60 - 64

[63] INHOMOGENEOUS STELLAR MODELS .2. MODELS WITH EXHAUSTED CORES IN GRAVITATIONAL CONTRACTION [J]. ASTROPHYSICAL JOURNAL, 1952, 116 (03) : 463 - 476

[64] THE 1ST 4 YEARS OF EXTRAGALACTIC RESEARCH WITH THE HALE 200-INCH TELESCOPE [J]. ASTRONOMICAL JOURNAL, 1954, 59 (05) : 180 - 182

[65] SANDAGE AR, 1954, PROCESSUS NUCLEAIRES, P254

[66] Effective wave lenghts of standard magnitudes color temperature and spectral type [J]. ASTROPHYSICAL JOURNAL, 1943, 98 (03) : 302 - 330

[67] Seyfert C. K., 1951, PASP, V63, P72

[68] Nuclear emission in spiral nebulae [J]. ASTROPHYSICAL JOURNAL, 1943, 97 (01) : 28 - 40

[69] THE DISTRIBUTION OF EXTRAGALACTIC NEBULAE [J]. ASTRONOMICAL JOURNAL, 1954, 59 (08) : 285 - 304

[70] SHANE CD, 1950, P AM PHILOS SOC, V94, P13