TY  - JOUR
AU  - Crato, Nuno
TI  - Some results on the spectral analysis of nonstationary time series.
JO  - Portugaliae mathematica
PY  - 1996
SP  - 179
EP  - 186
VL  - 53
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1996__53_2_47539/
LA  - en
ID  - PORMA_1996__53_2_47539
ER  -