@inproceedings{f.1954linear,
title={Linear relations between$E$-functions and Bessel functions},
author={F. M. Ragab},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203140606520799},
booktitle={Acta Mathematica},
volume={92},
number={1},
pages={1-11},
year={1954},
}