RELATIVE PROPER MOTIONS OF STARS IN THE REGION OF THE OPEN CLUSTER NGC-6940

[1] Cuffey J, 1944, ASTRON J, V51, P65, DOI [10.1086/105806, DOI 10.1086/105806]

[2] Proper motions in the galactic cluster NGC 752 [J]. ASTROPHYSICAL JOURNAL, 1939, 89 (03) : 431 - 444

[3] Discussions of color index and spectral type [J]. ASTROPHYSICAL JOURNAL, 1943, 98 (03) : 261 - 301

[4] SEARES FH, 1930, CARNEGIE I WASHINGTO, V402, P1

[5] Trumpler R. J., 1930, LICK OBS B, V14, P154

[1] Cuffey J, 1944, ASTRON J, V51, P65, DOI [10.1086/105806, DOI 10.1086/105806]

[2] Proper motions in the galactic cluster NGC 752 [J]. ASTROPHYSICAL JOURNAL, 1939, 89 (03) : 431 - 444

[3] Discussions of color index and spectral type [J]. ASTROPHYSICAL JOURNAL, 1943, 98 (03) : 261 - 301

[4] SEARES FH, 1930, CARNEGIE I WASHINGTO, V402, P1

[5] Trumpler R. J., 1930, LICK OBS B, V14, P154