共 10 条
- [1] HELLIWELL RA, 1958, P IRE, V46, P1760
- [2] HELLIWELL RA, 1956, LOW FREQUENCY PROP 1
- [4] NORINDER H, 1956, ARK GEOFYS, V2, P423
- [5] NORINDER H, 1952, J FRANKLIN I, V253, P492
- [6] NORINDER H, 1954, ARK GEOFYSIK, V2, P161
- [7] NORINDER H, 1957, ARK GEOFYS, V2, P515
- [8] PAPETLEPINE J, 1958, ARK GEOFYSIK, V3, P79
- [9] STOFFREGEN W, 1947, ARK MAT ASTR FYS A, V34
- [10] WAIT J, 1957, S PROPAGATION VLF RA, V4, P23