TY  - JOUR
A1  - Blanchard, R.D.
A1  - Bunker, J.B.
A1  - Wachs, M.
T1  - Distinguishing aging, period and cohort effects in longitudinal studies of elderly populations
Y1  - 1977
DO  - 10.1016/0038-0121(77)90032-5
VL  - 11
IS  - 3

ER  -