共 39 条
[22]
JOHNSON HL, 1968, NEBULAE INTERSTELLAR
[23]
KINMAN TD, 1958, MNAS S AFRICA, V17, P19
[24]
KUKARKIN BV, 1958, GENERAL CATALOG VARI
[26]
Morgan W. W., 1943, ATLAS STELLAR SPECTR
[27]
Parenago P. P., 1945, ASTRON ZH, V22, P129