Albano, 1970, Annls Géophys., 26, 151
Blamont, 1964, J. geophys. Res., 69, 4093, 10.1029/JZ069i019p04093
Bowman, 1969, Nature, Lond., 221, 456, 10.1038/221456a0
Bullock, 1961, Can. J. Phys., 39, 976, 10.1139/p61-107
Evans, 1970, Annls Géophys., 26, 167
Gadsden, 1968, J. Atmosph. Terr. Phys., 30, 151, 10.1016/0021-9169(68)90048-2
Gadsden, 1969, Annls Géophys., 25, 721
Gadsden, 1970, Annls Géophys., 26, 141
Gadsden, 1970, Annls Géophys., 26, 43
Gault, 1969, Can. J. Phys., 47, 85, 10.1139/p69-011
Hanson, 1967, J. geophys. Res., 72, 5513, 10.1029/JZ072i021p05513
Hunten, 1967, Space Sci. Rev., 6, 493, 10.1007/BF00173704
Sullivan, 1970, Annls Geophys., 26, 161
Sullivan, 1968, Nature, Lond., 220, 361, 10.1038/220361a0
Thomas, 1971, J. Atmosph. Terr. Phys., 33, 157, 10.1016/0021-9169(71)90194-2
