共 29 条
- [1] ADAMS, 1922, AP J, V55, P242
- [2] [Anonymous], LICK OBSER B
- [3] BOSS L, 1908, ASTRON J, V26, P31
- [4] HERTSZPRUNG E, 1919, AN, V209, P115
- [5] HOLMBERG E, 1944, MEDD LUND OBS 2, V2
- [7] KRON GE, 1948, ELECTRONICS AUG
- [8] KUIPER, 1937, AP J, V86, P166
- [9] MORGAN, 1940, AP J, V92, P256
- [10] RAMBERG JM, 1941, STOCKHOLM OBS ANN, V13