@inproceedings{w.1972on,
title={On the Valiron deficiencies of integral functions of infinite order},
author={W. K. Hayman},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203449321176170},
booktitle={Arkiv for Matematik},
volume={10},
number={1},
pages={163-172},
year={1972},
}
W. K. Hayman. On the Valiron deficiencies of integral functions of infinite order. 1972. Vol. 10. In Arkiv for Matematik. pp.163-172. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203449321176170.