共 4 条
[1]
HF RADIO FOCUSING CAUSED BY ELECTRON DISTRIBUTION BETWEEN IONOSPHERIC LAYERS
[J].
JOURNAL OF GEOPHYSICAL RESEARCH,
1967, 72 (09)
:2343-+
[3]
Kelso JM., 1964, RADIO RAY PROPAGATIO
[4]
VALLEY SL, 1965, HANDBOOK GEOPHYSI ED