1. AARKROG, A.; BOELSKIFTE, S.; DAHLGAARD, H.(Risoe National Lab., Roskilde (Denmark)): DUNIES, S.; HALLSTADIUS, L.; HOLM, E.; SMITH, J. N.; Technetium-99 and cesium-134 as long distance tracers in Arctic waters.Estuar. Coast. Shelf Sci. ISSN 027-7714. ECSSD. (May 1987). v. 24(5) p. 637–647. (RN 18:079233).
2. ANNON. The Chernobyl ractor accident and its impact on the aquatic environment (marine and freshwater). p. 21–24. In; Ministry of Agriculture, Fisheries and Food. Lowestoft (UK). Directorate of Fisheries Research. Report of the Director of Fisheries Research 1985–86. Lowestoft (UK). Ministry of Agriculture, Fisheries and Food. 1987. 52 p. (RN 19:017947).
3. ANON. Determination of Sr-90 and Cs-137 in environmental samples. (In German). Bestimmung von Sr-90 und Cs-137 in Umweltproben. p. 41–43. In: Niedersächsisches Inst. für Radioökologie, Hannover (Germany, F. R.). 1986 annual report of the Lower Saxony Institute for Radio-Ecology at the Hanover University. Niedersächsisches Institut für Radioökologie an der Universität Hannover. Jahresbericht 1986. INIS-mf-10730. 1987. 132 p. MF available from INIS. (RN 18:09533).
4. ANON. (Magyar Szabványügyi Hivatal, Budapest): Determination of the radioactive concentration90Sr in soil. (In Hungarian).90Sr radioaktív koncentrációjának meghatározása talajban. MSZ — 19400-86. Budapest (Hungary). Magyar Szabványügyi Hivatal. 1 Jul 1987 10 p. (RN 18:097854).
5. ANON.(Magyar Szabványügyi Hivatal, Budapest): Determination of the radioactive concentration of137Cs in soil. (In Hungarian).137Cs radiokatív koncentrációjának meghatározása talajban. MSZ — 19399-86. Budapest (Hungary). Magyar Szabvány ügyi Hivatal. 1 Jan 1987. 8 p. (RN 18:05487).