1. Milton Abramowitz, Irene Stegun, Handbook of mathematical functions, Dover, USA, ISBN 0-486-61272-4, re-edition of the 1972 version, 1046 pages. This thick textbook constitutes a complete mathematical handbook. The Dover edition makes it accessible to everyone.
2. Alain Baur, Protection contre les rayonnements : aspects physiques et méthodes de calcul [Radiation shielding: physical aspects and calculation methods], CEA/INSTN, ISBN 2-7272-0102-8, 1985, 287 pages. This is an excellent book on radiation physics and one of the most complete references for theoretical aspects [Métivier, 2006].
3. K.H. Bekurts, Karl Wirtz, Neutron physics, Springer Verlag, 1964, 444 pages. It is a more complete version of [Wirtz and Bekurts, 1958] in German. It is extremely clear with modern notations. There is also a significant chapter on detector calculations and on experimental methods.
4. Carlo Bernardini and Luisa Bonolis (editeurs), Enrico Fermi, his work and legacy, Springer, New-York, ISBN 3-540-22141-7, 2004, 410 pages. Collection of articles by scientists on the work of Enrico Fermi. Contains many anecdotes.
5. Kenneth M. Case, Paul F. Zweifel, Linear transport theory, Addison Wesley, USA, 1967. It is an international reference on transport theory. Impossible to talk about transport without reading this book!