Venkatasubramanian, A 2004Harikumar, J, Venkatasubramanian, A, Chen, X, Spasojevic, M, Li, J, Sonwalkar, VS, Inan, US, Benson, RF, Taylor, WWL Diagnostics of magnetospheric electron density and irregularitiesat altitudes <5000 km using whistler and Z mode echoes from radio sounding on the IMAGE satellite PDF (Online Viewing) 2004-07.pdf