TY - GEN AU - Mathur,A AU - Rycroft,M J AU - Sagredo,J L TI - Ring current effect on magnetospheric electron density profiles derived from plasmapause whistlers SN - 0028-0836 PY - 2003///0415 N1 - Publication Type: Journal Article UR - https://doi.org/10.1038/237508b0 ER -