共 7 条
[1]
GRATTON L, 1953, Z ASTROPHYS, V32, P69
[2]
GRATTON L, 1953, BAN
[3]
PADDOCK GF, 1954, AP J, V119, P309
[4]
SMITH HJ, 1954, SKY TELESCOPE, V14, P461
[5]
Walker M.F., 1952, PASP, V64, P192
[6]
WALKER MF, 1953, PUB ASP, V65, P39
[7]
WALRAVEN T, 1955, BAN