@article{MAN_1977__229_162998,
     author = {Hannu Niemi},
     title = {On {Vector} {Measures} {Related} to {Deterministic} {Non-Stationary} {Stochastic} {Processes.}},
     journal = {Mathematische Annalen},
     pages = {13--24},
     publisher = {mathdoc},
     volume = {229},
     year = {1977},
     zbl = {0339.60026},
     url = {http://geodesic.mathdoc.fr/item/MAN_1977__229_162998/}
}