1. Search for earthquake percursors in Azerbaijan;Agamirzoev,1976
2. On the seismicity-ionosphere relationship and its possible uses for an ionospheric prediction of earthquakes;Birfeld,1974
3. Anomalies in the atmospheric electron density as a possible precursor of in Tashkent earthquake;Datchenko;Dokl. Akad. Nauk Uzb. SSR,1972
4. On high-frequency electromagnetic radiation during seismic activity;Gokhberg;Dokl. Akad. Nauk USSR,1979
5. Sources of electromagnetic precursors of earthquakes;Gokhberg;Dokl. Akad. Nauk USSR,1980