@article{GAMA_1970_1970_1_a13,
     author = {Laplaza, Miguel L.},
     title = {Sistemas axiom\'aticos m\'as usuales de la teor{\'\i}a de conjuntos.},
     journal = {Gaceta matem\'atica},
     pages = {209-215},
     publisher = {mathdoc},
     volume = {22},
     number = {7-8},
     year = {1970},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/GAMA_1970_1970_1_a13/}
}