@article{SF_1993__47_2_135271,
     author = {Z. Goseki},
     title = {On p-irreducible {S-subsets} of an {S-set.}},
     journal = {Semigroup forum},
     pages = {215--222},
     publisher = {mathdoc},
     volume = {47},
     number = {2},
     year = {1993},
     zbl = {0793.20062},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__47_2_135271/}
}