@inproceedings{j.1955problèmes,
title={Problèmes aux limites sur des espaces fibrés},
author={J. L. Lions, and L. Schwartz},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203143307637821},
booktitle={Acta Mathematica},
volume={94},
number={1},
pages={155-159},
year={1955},
}