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BURROWS CR, 1937, P I R E, V25
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The optical behavior of the ground for short radio waves
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Some engineering and economic aspects of aspects of radio broadcast coverage
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PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1936, 24 (02)
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[5]
NIESSEN KF, 1936, ANN PHYS, V5, P673
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Graphs to Prof. Sommerfeld's attenuation formula for radio waves
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PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
1930, 18 (03)
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ROSE RLS, 1934, I E E J LONDON, V75, P221
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SOMMERFELD AN, 1910, JB DRAHTL TEL, V4, P157
[9]
Theoretical and practical aspects of directional transmitting systems
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PROCEEDINGS OF THE INSTITUTE OF RADIO ENGINEERS,
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[10]
Strutt MJO, 1931, ANN PHYS-BERLIN, V9, P67