共 57 条
[41]
1927, AP J, V65, P50
[42]
1930, PUB AAS, P377
[43]
1911, LICK OBS B, V6, P156
[44]
1933, AP J, V78, P73
[45]
1931, AP J, V74, P225
[46]
1933, AP J, V77, P321
[47]
1932, CR, V194, P1454
[48]
1924, AP J, V60, P11
[49]
1928, PHYS REV, V32, P172
[50]
1932, J OBS, V15, P45