1. ELF and VLS radiation from the polar electrojet antenna;Barr;Radio Sci.,1984
2. Generation of the electromagnetic signals of combinative frequencies in the ionosphere;Beljaev;Radiophys. Quantum Electron.,1987
3. Borisov , N. D. A. V. Gurevich K. Papadopoulos Generation of radiation by superluminal movement of heated region in the ionosphere 1991
4. The discovery of combinative frequencies in the interaction of powerful HF radiation with ionospheric plasma;Getmantsev;J. Exp. Tech. Phys. Lett.,1974