TY  - RPRT
A1  - Andersson, G.
A1  - Sobolev, B.
T1  - Small effects of selective migration and selective survival in retrospective studies of fertility
Y1  - 2001
UR  - http://www.demogr.mpg.de/Papers/Working/wp-2001-031.pdf
CY  - Rostock
T3  - MPIDR Working Paper 2001-031, Max Planck Institute for Demographic Research

ER  -