1. Bücker, H., and G. Horneck (1975). In Proc. 5th Int. Congress of Rad. Res., Seattle; Academic Press Inc., London; p. 1138.
2. RADIOBIOLOGICAL RESULTS FROM THE BACILLUS SUBTILIS BIOSTACK EXPERIMENTS WITHIN THE APOLLO AND THE ASTP SPACE FLIGHTS
3. Facius, R., H. Bücker, G. Reitz, and M. Schäfer (1978). In Proc. 6th Symp. on microdosimetry, Brussels. Harwood Academy Publishers, London; p. 977.
4. Charge and LET distributions of cosmic heavy ions measured on COSMOS 690, 782, and 936;Haşegan;Nuclear Tracks,1980
5. Brain study in balloon-borne monkeys exposed to cosmic rays;Haymaker;Aerospace Medicine,1970