1. L'émission crépusculaire des raies de Na et OI;Barbier;Ann. Geophys.,1948
2. Report of Gassiot Committee Conference of July 1947;Elvey
3. Analysis of temperature, pressure, and density of the atmosphere extending to extreme altitudes;Griminger,1948
4. The temperature of the upper atmosphere;Penndorf;Bull. Amer. Met. Soc.,1946
5. The height of emission layers in the upper atmosphere;Roach;Trans. Amer. Geophys. Union,1950