共 8 条
[1]
HECKMANN O, 1929, Z PHYS, V54, P183
[2]
HECKMANN O, 1929, GOTT VEROFF, V6
[3]
PEASE FG, 1917, MT W CONTR, P129
[4]
SHAPLEY, 1930, HARV OBS MON
[5]
Shapley H., 1934, MNRAS, V94, P791
[6]
SHAPLEY H, 1927, HARV B, V852
[8]
VOCCA P, 1935, MEM SOC ASTR ITAL, V9, P1