@inproceedings{j.1946on,
title={On the polynomials$R$_{$v$}^{$[λ]$}$(x), N$_{$v$}^{$[λ]$}$(x)$and$M$_{$v$}^{$[λ]$}$(x)$},
author={J. F. Steffensen},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203121903954662},
booktitle={Acta Mathematica},
volume={78},
number={1},
pages={291-314},
year={1946},
}
J. F. Steffensen. On the polynomials$R$_{$v$}^{$[λ]$}$(x), N$_{$v$}^{$[λ]$}$(x)$and$M$_{$v$}^{$[λ]$}$(x)$. 1946. Vol. 78. In Acta Mathematica. pp.291-314. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203121903954662.