共 14 条
[1]
Allen C. W., 1955, ASTROPHYSICAL QUANTI
[3]
EXCITATION OF THE HYDROGEN 21-CM LINE
[J].
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1958, 46 (01)
:240-250
[4]
FIELD GB, 1959, AP J, P551
[7]
HOLMBERG E, 1958, LUND MED 2
[9]
HULST HC, 1957, BAN, V14, P1