@inproceedings{tamotu2009time,
title={Time regularity of the solutions to second order hyperbolic equations},
author={Tamotu Kinoshita, and Giovanni Taglialatela},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203629360519994},
booktitle={Arkiv for Matematik},
volume={49},
number={1},
pages={109-127},
year={2009},
}
Tamotu Kinoshita, and Giovanni Taglialatela. Time regularity of the solutions to second order hyperbolic equations. 2009. Vol. 49. In Arkiv for Matematik. pp.109-127. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203629360519994.