Digital ionosonde measurements of the group-range and time variation of drift velocity in the southern polar cap ionosphere - the dopplionogram approach.

Parkinson M.L., Breed A.M., Dyson P.L., Morris R.J. (1998) Digital ionosonde measurements of the group-range and time variation of drift velocity in the southern polar cap ionosphere - the dopplionogram approach, Program and abstracts of the 13th National Congress of the Australian Institute of Physics, West Australia , September 27 - 2 October 1998 256;