@article{CLTM_1979_1979_1_a6,
     author = {Ruiz, Ceferino},
     title = {Ciertas identificaciones en los espacios de haces.},
     journal = {Collectanea mathematica},
     pages = {21-36},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1979},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/CLTM_1979_1979_1_a6/}
}