@article{CMUC_1985__26_2_a8,
     author = {Cipra, Tom\'a\v{s} and And\v{e}l, Ji\v{r}{\'\i}},
     title = {ARMA models with nonstationary white noise},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {285--298},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {1985},
     mrnumber = {803925},
     zbl = {0571.62081},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1985__26_2_a8/}
}