Recent measurements of upper-atmospheric ionization

[1] APPLETON, 1933, NATURE, V131, P872

[2] APPLETON, 1928, P ROY SOC A, V117, P576

[3] On two methods of ionospheric investigation [J]. PROCEEDINGS OF THE PHYSICAL SOCIETY, 1933, 45 : 673 - 688

[4] The existence of more than one lonised layer in the upper atmosphere [J]. NATURE, 1927, 120 : 330 - 330

[5] KIRBY, 1934, BUR STANDARDS J RES, V12, P16

[6] SCHAFER, 1933, NATURE, V131, P804

[7] WHITE, 1934, P PHYS SOC, V46, P91

[1] APPLETON, 1933, NATURE, V131, P872

[2] APPLETON, 1928, P ROY SOC A, V117, P576

[3] On two methods of ionospheric investigation [J]. PROCEEDINGS OF THE PHYSICAL SOCIETY, 1933, 45 : 673 - 688

[4] The existence of more than one lonised layer in the upper atmosphere [J]. NATURE, 1927, 120 : 330 - 330

[5] KIRBY, 1934, BUR STANDARDS J RES, V12, P16

[6] SCHAFER, 1933, NATURE, V131, P804

[7] WHITE, 1934, P PHYS SOC, V46, P91