共 12 条
- [1] ADAMS, 1936, AP J, V84, P14
- [2] BARNARD, 1919, POP ASTR, V27, P374
- [3] BEER, 1936, MN, V96, P236
- [4] DUFAY, 1936, Z AP, V13, P36
- [5] JOY, 1931, PUB ASP, V43, P353
- [6] MCLAUGLIN, 1937, PUB OBS U MICHIGAN, V6, P107
- [7] MORGAN, 1936, AP J, V83, P252
- [8] POPPER, 1939, PUB ASP, V51, P168
- [9] VORONTSOVVELYAM, 1935, Z AP, V11, P145
- [10] 1939, OBSERVATORY, V62, P234