@article{CMUC_1981_22_3_a7,
     author = {W\k{e}grzynowski, Stefan},
     title = {Disconnected regular $s$-manifolds},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {537--547},
     year = {1981},
     volume = {22},
     number = {3},
     mrnumber = {633581},
     zbl = {0496.53036},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1981_22_3_a7/}
}