TY  - JOUR
TI  - Nonstationarity and Level Shifts With an Application to Purchasing Power Parity
AU  - Pierre Perrón
AU  - Timothy J. Vogelsang
JO  - Journal of Business and Economic Statistics
PY  - 1992
VL  - 10
IS  - 3
DO  - 10.1080/07350015.1992.10509907
UR  - https://doi.org/10.1080/07350015.1992.10509907
ER  -