共 4 条
[1]
Note on a multifrequency automatic recorder of ionosphere heights
[J].
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1934, 22 (02)
:236-246
[2]
GILLILAND TR, 1933, BS J RES, V11, P561
[3]
KIRBY, 1934, P I RADIO ENGRS, V22
[4]
KIRBY, 1934, BS J RES, V12, P15