@inproceedings{p.1959the, title={The prediction theory of multivariate stochastic processes, III}, author={P. Masani}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203155145940909}, booktitle={Acta Mathematica}, volume={104}, number={1}, pages={141-162}, year={1959}, }