1. computer code IRI-86;Bilitza,1987
2. Clobal empirical model of distribution of concentration, temperature and effective electron collisions in the ionosphere;Chasovitin,1980
3. Apparaturs for the study of the topside ionosphere;Vasiliev,1980
4. Resonant heating of the ionospheric plasma by powerful radiopulses aboard the INTERCOSMOS-19 and COSMOS-1809 satellites;Shuiskaya,1987
5. The programme of topside ionosphere N(h) profiles calculation;Indiukov,1986