Völk, H.J. Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;
Berezhko, E., Ksenofontov, L., Ptuskin, V., Zirakashvili, V., & Völk, H. (2003). Cosmic ray production in supernova remnants including reacceleration: The secondary to primary ratio. Astronomy & Astrophysics, 410(1), 189-198. doi:10.1051/0004-6361:20031274.