@article{RM_1979_34_6_a27,
     author = {Z. Piotrowski and A. Szymanski},
     title = {Some remarks {on~Blumberg} spaces},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {211--212},
     year = {1979},
     volume = {34},
     number = {6},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_1979_34_6_a27/}
}