@inproceedings{m.1931sur,
title={Sur les directions de Borel des fonctions méromorphes},
author={M. Biernacki},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203056144561466},
booktitle={Acta Mathematica},
volume={56},
number={1},
pages={197-204},
year={1931},
}