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A PROCEDURE FOR THE DETERMINATION OF THE VERTICAL DISTRIBUTION OF THE ELECTRON DENSITY IN THE IONOSPHERE
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JOURNAL OF GEOPHYSICAL RESEARCH,
1952, 57 (03)
:357-367
[2]
THE RELIABILITY OF IONOSPHERIC HEIGHT DETERMINATIONS
[J].
PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1949, 37 (06)
:599-603