TY  - CHAP
A1  - Thatcher, A.R.
A1  - Kannisto, V.
A1  - Vaupel, J.W.
T1  - The force of mortality at ages 80 to 120
Y1  - 1998
T2  - Monographs on Population Aging 5
CY  - Odense, Denmark
PB  - Odense University Press

ER  -