共 9 条
[4]
DUENO B, 1962, IONOSPHERIC SPORADIC, P110
[5]
FRIHAGEN J, 1966, ELECTRON DENSITY ED
[6]
LALONDE LM, 1966, ELECTRON DENSITY PRO
[7]
MCKINLEY DWR, 1961, METEOR SCIENCE ENGIN, P114
[8]
SMITH, 1962, IONOSPHERIC SPORA ED, P110