@article{SF_1970__1_133786,
     author = {Z. Hedrlin and P. Goralcik and M. M\"unzova},
     title = {On determinacies of monoids.},
     journal = {Semigroup forum},
     pages = {169--171},
     publisher = {mathdoc},
     volume = {1},
     year = {1970},
     zbl = {0232.20136},
     url = {http://geodesic.mathdoc.fr/item/SF_1970__1_133786/}
}