@article{MASLO_1990_40_1_a7,
     author = {Wajch, Eliza},
     title = {On small systems and compact families of {Borel} functions},
     journal = {Mathematica slovaca},
     pages = {63--69},
     year = {1990},
     volume = {40},
     number = {1},
     mrnumber = {1094973},
     zbl = {0739.28002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1990_40_1_a7/}
}