Normal and abnormal region-E ionisation

[1] APPLETON, 1932, P ROY SOC A, V137, P36

[2] APPLETON, 1937, P ROY SOC A, V165, P451

[3] APPLETON, 1931, NATURE LOND, V120, P197

[4] APPLETON, 1938, P PHYS SOC, V51, P81

[5] APPLETON, 1933, P PHYS SOC, V45, P248

[6] British radio observations during the Second International Polar Year 1932-33 [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1937, 236 : 191 - U30

[7] Appleton EV., 1935, P R SOC LOND A, V150, P685, DOI [10.1098/rspa.1935.0129, DOI 10.1098/RSPA.1935.0129]

[8] BERKNER, 1937, TERR MAG MAR, P73

[9] Pierce JA, 1938, P IRE, V26, P892

[10] WHATMAN, 1938, P PHYS SOC, V50, P217

[1] APPLETON, 1932, P ROY SOC A, V137, P36

[2] APPLETON, 1937, P ROY SOC A, V165, P451

[3] APPLETON, 1931, NATURE LOND, V120, P197

[4] APPLETON, 1938, P PHYS SOC, V51, P81

[5] APPLETON, 1933, P PHYS SOC, V45, P248

[6] British radio observations during the Second International Polar Year 1932-33 [J]. PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL AND PHYSICAL SCIENCES, 1937, 236 : 191 - U30

[7] Appleton EV., 1935, P R SOC LOND A, V150, P685, DOI [10.1098/rspa.1935.0129, DOI 10.1098/RSPA.1935.0129]

[8] BERKNER, 1937, TERR MAG MAR, P73

[9] Pierce JA, 1938, P IRE, V26, P892

[10] WHATMAN, 1938, P PHYS SOC, V50, P217