TY  - JOUR
A1  - Piehl, A.M.
A1  - Cooper, S.J.
A1  - Braga, A.A.
A1  - Kennedy, D.M.
T1  - Testing for structural breaks in the evaluation of programs
Y1  - 2003
DO  - 10.1162/003465303322369713
VL  - 85
IS  - 3

ER  -