1. Carrel , R. Analysis and design of the log-periodic dipole antenna 1961
2. Cudak , M. C. Temporal and spectral variations of UHF and VHF man-made r-f noise: surveyed from a light aircraft 1990
3. Echigo , H. Y. Kurihara R. Sato A measurement method for VHF band city noise: Measurement external to the city IEEE International Symposium on Electromagnetic Compatibility 385 390 New York 1980
4. Statistical characteristics of impulsive radio noise in a city;Echigo;Trans. Inst. Electron. Commun. Eng. (Jpn.), Part B,1983
5. Day and night variability of industrial radio interference level, measured on 0.5 MHz in towns of sparsely and highly industrialized regions;Moron;Prace Instytutu Lacznosci (Poland),1977