@inproceedings{h.1966necessary,
title={Necessary density conditions for sampling and interpolation of certain entire functions},
author={H. J. Landau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203209880036020},
booktitle={Acta Mathematica},
volume={117},
number={1},
pages={37-52},
year={1966},
}
H. J. Landau. Necessary density conditions for sampling and interpolation of certain entire functions. 1966. Vol. 117. In Acta Mathematica. pp.37-52. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203209880036020.