@article{ELMA_1972__27_141066,
     author = {S. Lajos},
     title = {On {Regular} {Right} {Duo} {Semigroups.}},
     journal = {Elemente der Mathematik},
     pages = {86--87},
     publisher = {mathdoc},
     volume = {27},
     year = {1972},
     zbl = {0214.03501},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1972__27_141066/}
}