共 22 条
[14]
Meinel A.B., 1969, CATALOG EMISSION LIN
[15]
MERRILL KM, 1975, ASTROPHYS J, V200, pL37, DOI 10.1086/181891
[17]
OSTERBROCK DE, 1974, ASTROPHYSICS GASEOUS, P66
[20]
SEATON MJ, 1966, MON NOT R ASTRON SOC, V132, P347