1. A study of vertical incidence ionospheric absorption at 2 mc/s;Beynon,1955
2. The D Region of the ionosphere;Bjelland;Nature,1959
3. Incoherent scattering by free electrons as a technique for studying the ionosphere and the exosphere;Bowles;U.S. Natl. Bur. Stds., Rept. 6070,1959
4. A theory of incoherent scattering of radio waves by a plasma;Dougherty,1960
5. The interaction of pulsed radio waves in the ionosphere;Fejer;J. Atmos. Terr. Phys.,1955