@article{CMUC_1986__27_3_a1,
     author = {Sgall, Ji\v{r}{\'\i}},
     title = {Construction of the class {FN}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {435--436},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {1986},
     mrnumber = {873617},
     zbl = {0611.03025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1986__27_3_a1/}
}