@article{AYIK2021_528496,
author={Hayrullah AYIK and emrah korkmaz},
title={Ranks of nilpotent subsemigroups of order-preserving and decreasing
transformation semigroups},
year={2021},
journal={Turkish Journal of Mathematics},
issn={1300-0098},
volume={45},
number={4},
url={http://search/yayin/detay/528496}
}