@article{RMC_1998_1998_1_a20,
     author = {Ostrovskii, M. I.},
     title = {Precoyecciones y sus duales.},
     journal = {Revista matem\'atica complutense},
     pages = {59-77},
     publisher = {mathdoc},
     volume = {11},
     number = {1},
     year = {1998},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RMC_1998_1998_1_a20/}
}