共 7 条
[1]
BELOPOLSKY A, 1915, B PULKOVO OBS, V6, P161
[3]
Jaschek M, 1958, Z ASTROPHYS, V45, P35
[4]
Kiess C. C., 1919, PUBL OBSERV U MICHIG, V3, P106
[5]
MORGAN WW, 1935, PUB YERKES OBS 3, V7