共 9 条
[1]
BEARD M, 1966, AUST J PHYS, V19, P141
[2]
BEARD M, 1966, AUST J PHYS, V19, P875
[3]
Bennett A.S., 1962, MMRAS, V68, P163
[8]
Sharpless S, 1959, APJS, V4, P257, DOI [10.1086/190049, DOI 10.1086/190049]
[9]
Westerhout G., 1958, B ASTRON I NETHERLAN, V14, P215