1. In situ measurement of the mesosphere and stratosphere;Croskey,1976
2. Design of a simple Gerdien condenser for ionospheric D-region charged particle density and mobility measurements;Farrokh,1975
3. Transient compressional response of D-region ionization;Hill;J. Atmos. Terr. Phys.,1977
4. Small-scale fluctuations in D-region ionization due to hydrodynamic turbulence;Hill,1977
5. Krall, N. A., , A. W., Trivelpiece, , Principles of Plasma Physics, McGraw-Hill, New York, 1973,