共 50 条
- [1] RADIO-FREQUENCY OPTICAL DEPTHS OF PLANETARY NEBULAE ASTROPHYSICAL JOURNAL, 1965, 141 (03): : 1285 - +
- [2] LYMAN CONTINUUM OPTICAL DEPTHS OF PLANETARY NEBULAE ASTRONOMICAL JOURNAL, 1965, 70 (09): : 669 - +
- [8] SPECTROPHOTOMETRIC STUDIES OF GASEOUS NEBULAE .6. NON-THERMAL RADIO-FREQUENCY SOURCE PLANETARY NGC 3242 ASTROPHYSICAL JOURNAL, 1966, 143 (02): : 327 - &