@article{CMUC_1992__33_4_a10,
     author = {Ml\v{c}ek, Josef},
     title = {$\in $-representation and set-prolongations},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {661--666},
     publisher = {mathdoc},
     volume = {33},
     number = {4},
     year = {1992},
     mrnumber = {1240187},
     zbl = {0784.03032},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1992__33_4_a10/}
}