@article{RRACEFN_1996_1996_1_a1,
     author = {Mart{\'\i}nez Mora, Gaspar},
     title = {A topology over a set of systems },
     journal = {Revista de la Real Academia de Ciencias Exactas, F{\'\i}sicas y Naturales},
     pages = {141-147},
     year = {1996},
     volume = {90},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RRACEFN_1996_1996_1_a1/}
}