References

If you use these fragmentation functions, please cite

M. Kachelriess and S. Ostapchenko,
"Deriving the cosmic ray spectrum from gamma-ray observations,"
http://arxiv.org/abs/1206.xxxx, submitted to Phys. Rev. D

If you use the option reac=0, please cite additionally
T. Kamae et al., ApJ 647 (2006) 692.