@inproceedings{r.1974stochastic,
title={Stochastic integrals in the plane},
author={R. Cairoli, and John B. Walsh},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203235224162184},
booktitle={Acta Mathematica},
volume={134},
number={1},
pages={111-183},
year={1974},
}