共 10 条
[1]
BEALS CS, 1951, PUBLICATIONS DOMINIO, V9, P124
[2]
CANNON AJ, 1924, 801 HARV B
[3]
GAPOSCHKIN S, 1942, ASTROPHYS J, V97, P166
[5]
SHAPLEY H, 1925, 271 HARV CIRC
[6]
SHAPLEY H, 1925, 814 HARV B
[7]
STRUVE, 1932, AP J, V75, P177
[8]
STRUVE, 1930, ASTROPHYSICAL J, V72, P343
[10]
THACKERAY AD, 1955, MON NOT R ASTRON SOC, V115, P236