@inproceedings{reinhold1987whitney’s,
title={Whitney’s extension theorem for ultradifferentiable functions of Beurling type},
author={Reinhold Meise, and B. Alan Taylor},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203527708307492},
booktitle={Arkiv for Matematik},
volume={26},
number={1},
pages={265-287},
year={1987},
}
Reinhold Meise, and B. Alan Taylor. Whitney’s extension theorem for ultradifferentiable functions of Beurling type. 1987. Vol. 26. In Arkiv for Matematik. pp.265-287. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203527708307492.