Völk, H. J. Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;
Berezhko, E. G. Prof. Heinrich J. Völk, Emeriti, MPI for Nuclear Physics, Max Planck Society;
Völk, H. J., Berezhko, E. G., & Ksenofontov, L. T. (2008). New evidence for strong non-thermal effects in Tycho's supernova remnant. Advances in Space Research, 41(3), 473-476.