共 24 条
[3]
ARP HC, 1958, T IAU, V10, P688
[8]
EGGEN OJ, 1951, AP J, V113, P398
[9]
GAPOSCHKIN CP, 1954, VARIABLE STARS GALAC, P30
[10]
GASCOIGNE SCB, 1953, PUB ASP, V65, P32