1. Profile of charged particle density in the ionosphere observed with rockets.;Aono,1963
2. Wireless studies of the ionosphere;Appleton;J. Instn. Elect. Eng.,1932
3. A note on the “sluggishness” of the ionosphere;Appleton;J. Atmos. Terr. Phys.,1953
4. Global morphology of the E- and F1-layers of the ionosphere;Appleton;J. Atmos. Terr. Phys.,1959
5. The normal E region of the ionosphere;Appleton;Proc. Inst. Rad. Eng.,1959