1. Grieder, P. K. F. Cosmic Rays at Earth (Amsterdam: Elsevier Science) (2001), ISBN 0-4444-50710-8.
2. Pelliccioni, M. Fluence to dose equivalent conversion data and radiation weighting factors for high-energy radiation. Radiat. Prot. Dosim.77, 159–170 (1998).
3. International Organisation for Standardisation. Guide to the expression of uncertainty in measurement (GUM). report ISO/DGuide 99998 (Geneva: ISO) (1995).
4. Gamma Dose Rate Proportional Counter FHZ 600 A. Manufactured by FAG Kugelfischer, Erlangen (Germany).
5. Ionisation Chamber FHT 191 Manufactured by N. FAG Kugelfischer, Erlangen, Germany.