@inproceedings{aristotle1948on,
title={On a non-linear total differential equation in normed linear spaces},
author={Aristotle D. Michal},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203124250259678},
booktitle={Acta Mathematica},
volume={80},
number={1},
pages={1-21},
year={1948},
}
Aristotle D. Michal. On a non-linear total differential equation in normed linear spaces. 1948. Vol. 80. In Acta Mathematica. pp.1-21. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203124250259678.