@article{MASLO_1971__21_2_a6,
     author = {Abrhan, Imrich},
     title = {Note on the {Set} of {Nilpotent} {Elements} and on {Radicals} of {Semigroups}},
     journal = {Mathematica slovaca},
     pages = {124--130},
     publisher = {mathdoc},
     volume = {21},
     number = {2},
     year = {1971},
     mrnumber = {0302792},
     zbl = {0232.20129},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1971__21_2_a6/}
}