1. A. Janssens, J. Buysse, and E. Cotton, Nucl. Instrum. Methods,A-234, 335 (1985).
2. H. Loosli, M. Heimann, and H. Oeschger, Radiocarbon,22, No. 2, 461 (1980).
3. V. B. Alekseev, L. I. Gedeonov, V. G. Golovlev and V. A. Treushchenko, “Intercalibration krypton-85 measurements in atmospheric air,” Minutes of Tenth Scientific-Technical Council of COMECON Standing Committee on Atomic Energy, Appendix 5 [in Russian], Izd. SÉV, Budapest (1985), p. 13.