Buchkapitel
Axford, W. I.: The origin of cosmic rays. In: Astrophysical Aspects of the Most Energetic Cosmic Rays (Proc. ICRR International Symposium, Kofu, Japan, 1990), S. 406 - 420 (Hg. Nagano, M.; Takahara, F.). World Scientific Publ. Comp., Singapore (1991)