S. B. Gulin, E. Z. Samyshev, N. A. Stokozov, and A. A. Sysoyev, “Assessment of the sedimentation rate of the suspended matter in the surface layer of the water mass in the Bransfield Strait (Western Antarctica) using 234Th as a natural radiotracer”, uaj, no. 1, pp. 30-36, Dec. 2003.