TY  - JOUR
A1  - Lau, C Q.
A1  - Cronberg, A.
A1  - Marks, L.
A1  - Amaya, A.
T1  - In search of the optimal mode for mobile phone surveys in developing countries. A comparison of IVR, SMS, and CATI in Nigeria
Y1  - 2019
VL  - 13
IS  - 3

ER  -