@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},
}