TY  - JOUR
A1  - Schafer, J.L.
A1  - Graham, J.W.
T1  - Missing data: Our view of the state of the art
Y1  - 2002
DO  - 10.1037/1082-989X.7.2.147
JF  - Psychological Methods
VL  - 7
IS  - 2

ER  -