@article{ZNSL_2007_343_a8,
     author = {N. Kehayopulu and M. Tsingelis},
     title = {$\mathcal{CS}$-indecomposable ordered semigroups},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {222--232},
     publisher = {mathdoc},
     volume = {343},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2007_343_a8/}
}