@article{CMUC_1980__21_4_a5,
     author = {Andr\'eka, H. and N\'emeti, I.},
     title = {Does ${\bf SP}\ K\supseteq\ {\bf PS}\ K$ imply axiom of choice?},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {699--706},
     publisher = {mathdoc},
     volume = {21},
     number = {4},
     year = {1980},
     mrnumber = {597759},
     zbl = {0453.04003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1980__21_4_a5/}
}