1. Rossi, B.: High Energy Particles. New York 1952.This excellent book covers, up to the middle of 1951 the tools, both experimental and theoretical, of use in investigating the properties of cosmic radiation in the atmosphere. It also reports the important results of measurements in the atmosphere and gathers them into a coherent picture.
2. Brown, Camerini, Fowler, Heitler, King and Powell: Phil. Mag. 40, 862 (1949).
3. Camerini, Cook, Davies, Fowler, Lock, Muirhead and Tobin: Phil. Mag. 40, 1073 (1949).
4. Fowler, P. H.: Phil. Mag. 41, 169 (1950).
5. Camerini, Fowler, Lock and Muirhead: Phil. Mag. 41, 413 (1950).