[1] IAEA, A-1400 Vienna, Austria
[2] Russian Inst Agr Radiol & Agroecol, Obninsk 249020, Russia
[3] Res Inst Soil Sci & Agrochem, Minsk, BELARUS
[4] Lancaster Environm Ctr, Ctr Ecol & Hydrol, Lancaster LA1 4AP, England
[5] UIAR, UA-08162 Chabany, Kiev Region, Ukraine
[6] Res Inst Radiol, Gomel 246000, BELARUS