1. Pulsed HF radiowave absorption measurements at 2.1 MHZ. over Delhi under quiet and solar flare conditions and related electron density height profiles;Balachandra Swamy,2014
2. The Southern Boundary Region of the Winter Anomaly in Ionospheric Absorption in Winter 1971/72 Observed on Board the Cargo Vessel “Hanau” of Hapag-Lloyd Moving between 10° and 55° N;Barke,2013
3. Ionospheric Radio Propagation;Davies,1965
4. Ionospheric Radio;Davies,1990
5. The Propagation of Electromagnetic Waves in Plasmas Oxford;Ginzburg,1970