@inproceedings{björn1986an,
title={An ill-posed moving boundary problem for doubly-connected domains},
author={Björn Gustafsson},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203524662134467},
booktitle={Arkiv for Matematik},
volume={25},
number={1},
pages={231-253},
year={1986},
}
Björn Gustafsson. An ill-posed moving boundary problem for doubly-connected domains. 1986. Vol. 25. In Arkiv for Matematik. pp.231-253. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203524662134467.