Journal Article

The survivor ratio method for estimating numbers at high ages

Thatcher, A. R., Kannisto, V., Andreev, K. F.
Demographic Research, 6:1, 1–18 (2002)
The Max Planck Institute for Demographic Research (MPIDR) in Rostock is one of the leading demographic research centers in the world. It's part of the Max Planck Society, the internationally renowned German research society.