共 50 条
- [1] LEVEL POPULATIONS OF HYDROGEN IN GASEOUS NEBULAE ASTRONOMICAL JOURNAL, 1968, 73 (2P2): : S23 - &
- [3] HIGH-LEVEL POPULATIONS OF HYDROGEN IN GASEOUS NEBULAE ASTROPHYSICAL JOURNAL, 1969, 155 (1P1): : 47 - &
- [9] RECOMBINATION SPECTRA OF HYDROGEN + HELIUM IN GASEOUS NEBULAE ASTRONOMICAL JOURNAL, 1964, 69 (08): : 545 - &