@ARTICLE{
author={Zhu QingShun,Popovic Zarko L},
year={2016},
title={Decompositions of Ordered Semigroups into a Chain of k-Archimedean Ordered Semigroups},
journal={FILOMAT},
volume={30},
number={10},
pages={2771-2780},
document_type={Article},
} 

@ARTICLE{
author={Zhu QingShun,Popovic Zarko L},
year={2014},
title={Band and Semilattice Decompositions of X (k)-Simple Ordered Semigroups},
journal={FILOMAT},
volume={28},
number={3},
pages={649-656},
document_type={Article},
}