@article{PIM_1952_S_S_IV_04_a19,
     author = {{\DJ}uro Kurepa},
     title = {Remarque {Sur} {Le} {Produit} {De} {Deux} {Nombres} {Complexes} {Du} {M\^eme} {Signe}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {176 },
     publisher = {mathdoc},
     volume = {_S_S_IV},
     number = {04},
     year = {1952},
     url = {http://geodesic.mathdoc.fr/item/PIM_1952_S_S_IV_04_a19/}
}