@article{EXMATH_1996_1996_1_a44,
     author = {Ostrovskii, M. I.},
     title = {Generalizaci\'on de las constantes de proyecci\'on: ampliaciones suficientes.},
     journal = {Extracta mathematicae},
     pages = {466-474},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1996},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMATH_1996_1996_1_a44/}
}