共 74 条
[1]
ALDROVANDI SM, 1973, ASTRON ASTROPHYS, V26, P33
[4]
Arp H.C, 1967, ASTROPHYS LETTERS
[6]
Baade W, 1951, PUBL U MICHIGAN OBS, V10, P7
[7]
BALDWIN J, 1972, 2 U CAL LICK OBS TEC