@article{MASLO_1957_7_3_a1,
     author = {\v{S}ulka, Robert},
     title = {O izomorfiszme topologick\'ych grupoidov},
     journal = {Mathematica slovaca},
     pages = {143--157},
     year = {1957},
     volume = {7},
     number = {3},
     mrnumber = {0098794},
     language = {sk},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1957_7_3_a1/}
}