- N. I. Izhovkina, I. S. Prutensky, S. A. Pulinets, A. Kiraga, Z. Klos, H. Rothkael, “Electrostatic Noise Spectrum at the Electron Cyclotron Frequency and Electromagnetic Emission in the Inhomogeneous Plasma of the Topside Ionosphere”, Cosmic Res, 43, № 3, 2005, 192