共 6 条
[1]
BURKARD O, 1958, GEOFIS PURA APPL, V41, P133
[2]
BURKARD O, 1957, GEOFIS PURA APP, V37, P145
[3]
CHAPMAN S, 1957, SMITHSONIAN CONTRIB, V2
[5]
THE MEASUREMENT OF THE ELECTRON CONTENT OF THE IONOSPHERE BY THE LUNAR RADIO ECHO METHOD
[J].
PROCEEDINGS OF THE PHYSICAL SOCIETY OF LONDON SECTION B,
1956, 69 (09)
:953-955
[6]
1958, PRELIMINARY RESULTS