@article{SF_1993__46_1_135230,
     author = {A. Nagy},
     title = {Subdirectly irreducible right commutative  semigroups.},
     journal = {Semigroup forum},
     pages = {187--198},
     publisher = {mathdoc},
     volume = {46},
     number = {1},
     year = {1993},
     zbl = {0803.20042},
     url = {http://geodesic.mathdoc.fr/item/SF_1993__46_1_135230/}
}