1. Environmental studies on radioecological sensitivity and variability with special emphasis on the fallout nuclides 90Sr and 137Cs;Aarkrog;D.Sc. Thesis, Risø-R-437,1979
2. Europium-155 in debris from nuclear weapons;Aarkrog;Science,1967
3. The radiation field in air due to distributed gamma-ray sources in the ground;Beck,1968
4. Basic safety standards for the health protection of the general public and workers against dangers of ionizing radiation;CEC,1979
5. Landbrug;Jacobsen,1958