1. Design Studies of a Gamma-Ray Scatter Atmospheric Density Gauge by a Muinvariable Search Method
2. Mathematical models for studying the gamma-ray scatter technique for atmospheric density measurements;Whitaker;Final Report on Contract No. NASI-7046,1969
3. Absolute beta counting using end-window Geiger-Müller counters and experimental data on beta-particle scattering effects;Zumwalt,1950
4. Solid Angle Subtended by a Circular Aperture at Point and Spread Sources: Formulas and Some Tables