TY  - BOOK
AU  - Sinn, Hans-Werner
AU  - National Bureau Of Economic Research
TI  - The value of children and immigrants in a pay-as-you-go-pension system: A propasal for a partial transition to a funded system
T2  - Working paper series
U1  - 6229 
PY  - 1997///
CY  - Cambridge, MA
PB  - NBER
ER  -