TY  - JOUR
A1  - Van de Kaa, D.J.
T1  - Is the second demographic transition a useful research concept? Questions and answers
Y1  - 2004
DO  - 10.1553/populationyearbook2004s4
JF  - Vienna Yearbook of Population Research
VL  - 2004
SP  - 4
EP  - -10

ER  -