共 19 条
[2]
CLAVEL J, 1980, MON NOT R ASTRON SOC, V192, P769
[4]
DEVAUCOULEURS G, 1976, 2ND REFERENCE CATALO
[6]
HOLMBERG E, 1975, STARS STELLAR SYSTEM, V9, P123
[7]
HOLMBERG EB, 1958, MEDD LUND OBS SER, V2