@misc{Xiao_Man_Online,
 author={Xiao, Man and Liu, Xiaoqiao and Li, Weidong and Chen, Xin and Sterna, Małgorzata and Blazewicz, Jacek},
 howpublished={online},
 publisher={Zielona Góra: Uniwersytet Zielonogórski},
 language={eng},
 abstract={In this study, we investigate several online and semi-online scheduling problems related to two hierarchical machines with a common due date to maximize the total early work.},
 type={artykuł},
 title={Online and semi-online scheduling on two hierarchical machines with a common due date to maximize the total early work},
 keywords={online and semi-online, early work, hierarchical scheduling, competitive ratio},
}