@article{MASLO_1963_13_3_a2,
     author = {\v{S}ulka, Robert},
     title = {Pozn\'amka o faktorov\'ych pologrup\'ach danej pologrupy},
     journal = {Mathematica slovaca},
     pages = {205--208},
     year = {1963},
     volume = {13},
     number = {3},
     zbl = {0134.25902},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1963_13_3_a2/}
}