@article{CMUC_2011_52_4_a2,
     author = {Je\v{z}ek, J. and Kepka, T. and N\v{e}mec, P.},
     title = {Commutative zeropotent semigroups with few prime ideals},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {501--505},
     year = {2011},
     volume = {52},
     number = {4},
     mrnumber = {2863994},
     zbl = {1249.20061},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2011_52_4_a2/}
}