1. M. J. Aitken, and Auxier , 1968 , Proceedings of the Second International Conference on Luminescence Dosimetry (ed. U.S. Atomic Energy Commission), 281 -290 .
2. S. J. Fleming , 1969 , D. Phil. Thesis , Oxford University, p.224 .
3. The Intensities of the Hard and Soft Components of Cosmic Rays as Functions of Altitude and Zenith Angle
4. G. V. Gorshkov, and Aleksev , 1957 , Radiometric Methods in the Prospecting and Exploration of Uranium Ores (ed. State Scientific-Technical Publishers, Moscow), 46 -54 .
5. A. G. Grammakov , 1957 , Ibid., 425 -486 .