TY  - JOUR
A1  - Constant, A.F.
A1  - Zimmermann, K.F.
T1  - Circular and repeat migration: Counts of exits and years away from the host country
Y1  - 2011
DO  - 10.1007/s11113-010-9198-6
VL  - 30
IS  - 4

ER  -