@inproceedings{jan1970on,
title={On the local and global non-characteristic Cauchy problem when the solutions are holomorphic functions or analytic functionals in the space variables},
author={Jan Persson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203447106313151},
booktitle={Arkiv for Matematik},
volume={9},
number={1},
pages={171-180},
year={1970},
}
Jan Persson. On the local and global non-characteristic Cauchy problem when the solutions are holomorphic functions or analytic functionals in the space variables. 1970. Vol. 9. In Arkiv for Matematik. pp.171-180. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203447106313151.