@article{SF_1982__25_134580,
     author = {M.B. Szendrei},
     title = {Correction and supplement to },
     journal = {Semigroup forum},
     pages = {311--324},
     publisher = {mathdoc},
     volume = {25},
     year = {1982},
     zbl = {0496.20050},
     url = {http://geodesic.mathdoc.fr/item/SF_1982__25_134580/}
}