@inproceedings{jean-françois1979the,
title={The Levi problem in nuclear Silva spaces},
author={Jean-François Colombeau, and Jorge Mujica},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203508198986332},
booktitle={Arkiv for Matematik},
volume={18},
number={1},
pages={117-123},
year={1979},
}
Jean-François Colombeau, and Jorge Mujica. The Levi problem in nuclear Silva spaces. 1979. Vol. 18. In Arkiv for Matematik. pp.117-123. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203508198986332.