@article{PIM_1936_Tom_V_a12,
     author = {Georges Kurepa},
     title = {Sur les classes (\ensuremath{\varepsilon}) et {(D)}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {124 },
     publisher = {mathdoc},
     volume = {Tom_V},
     year = {1936},
     url = {http://geodesic.mathdoc.fr/item/PIM_1936_Tom_V_a12/}
}