共 7 条
[2]
Henize K. G., 1956, ASTROPHYS J SUPPL S, V2, P315, DOI 10.1086/190025
[5]
TIFFT WG, 1963, MON NOT R ASTRON SOC, V125, P199
[6]
WESTERLUND BE, 1963, MONTHLY NOTICES ROY, V127, P429
[7]
WESTERLUND BE, 1963, OBSERVATORY, V83, P74