@article{Cao_Liu_Liu_2017, title={The properties on differential-difference polynomials}, volume={69}, url={http://umj.imath.kiev.ua/index.php/umj/article/view/1676}, abstractNote={The main aim of this paper is to improve some classical results on the distribution of zeros for differential polynomials and
differential-difference polynomials. We present some results on the distribution of zeros of $[f(z)^nf(z + c)]^{(k)} \alpha (z)$ and
$[f(z)^n(f(z + c) f(z))]^{(k)} \alpha (z)$ and give some examples to show that the results are best possible in a certain sense.}, number={1}, journal={Ukrainsâ€™kyi Matematychnyi Zhurnal}, author={Cao, T. B. and Liu, K. and Liu, X. L.}, year={2017}, month={Jan.}, pages={71-82} }