@article{CLTM_1966_1966_1_a5,
     author = {Laplaza, Miguel L.},
     title = {Restricci\'on a un abierto de la imagen rec{\'\i}proca de un prehaz.},
     journal = {Collectanea mathematica},
     publisher = {mathdoc},
     year = {1966},
     language = {es},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1966_1966_1_a5/}
}