1. Preliminary results of the morphology of the topside ionosphere, presented at the Spring URSI meeting;Chan;Washington, D.C., April 20-24.,1965
2. Tables and graphs of electron densities and scale heights in the topside ionosphere: Alouette I observations over the American continents, NASA Special Publication;Chan;NASA SP-3027,1966
3. Studies of the topside polar ionosphere using Alouette I data, presented at the Spring URSI Meeting;Colin;Washington, D.C., April 20-24.,1965