Dear MARMAM,  I am searching for the following references: Savinetskii, A. B. (1992). Secular dynamics of the population of the sea cow (Hydrodamalis gigas, Zimm., 1780) in the Late Holocene. Doklady Akademii Nauk Sssr 326(3):570-572.  Savinetsky, A. B. (1993). Ancient population dynamics of the sea cow (Hydrodamalis gigas Zimm., 1780) in the late Holocene. Doklady Biological Sciences (English Translation of Doklady Akademii Nauk Sssr) 326(1-6):403-405. If anyone has access, I would very much appreciate if you would send me PDFs of the papers.Thanks in advance,Tom JeffersonClymene Enterprisessclymene@aol.com