共 50 条
- [1] IONIZATION STRUCTURE AND COMPOSITION OF PLANETARY NEBULA NGC-7027 ASTROPHYSICAL JOURNAL, 1978, 219 (02): : 565 - 574
- [3] RECOMBINATION SPECTRUM OF PLANETARY NEBULA NGC 7027 ASTROPHYSICAL JOURNAL, 1972, 172 (03): : 593 - &
- [5] INFRARED OBSERVATIONS OF PLANETARY NEBULA NGC 7027 ASTROPHYSICAL JOURNAL, 1967, 149 (3P2): : L97 - &
- [6] SPECTROPHOTOMETRY OF THE PLANETARY NEBULA NGC-7027 ASTRONOMICAL JOURNAL, 1948, 53 (07): : 202 - 202
- [7] THE COMPOSITION OF THE PLANETARY NEBULA NGC-7027 ASTROPHYSICAL JOURNAL, 1954, 120 (03): : 401 - 412