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The Heligman-Pollard formula as a tool for expanding and abridged life table
Kostakē, Anastasia, (1991)
Population dynamics in variable environments
Tuljapurkar, Shripad, (1990)
Long-range world population projections : based on the 1998 revision
(2000)
Statistical demography and forecasting
Alho, Juha M., (2005)
The magnitude of error due to different vital processes in population forecasts
Alho, Juha M., (1992)
Estimating the strength of expert judgement : the case of US mortality forecasts