共 50 条
- [44] SEASONAL VARIATIONS IN IONOSPHERIC TOTAL ELECTRON CONTENT JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS, 1967, 29 (03): : 321 - &
- [47] DIURNAL VARIATION OF IONOSPHERIC TOTAL ELECTRON CONTENT JOURNAL OF GEOPHYSICAL RESEARCH, 1966, 71 (03): : 849 - +