@article{CMUC_1987__28_2_a1,
     author = {Bregman, Jurij H.},
     title = {Some factorization theorems for paracompact $\sigma$-spaces},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {211--216},
     publisher = {mathdoc},
     volume = {28},
     number = {2},
     year = {1987},
     mrnumber = {904745},
     zbl = {0636.54031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987__28_2_a1/}
}