@article{CMUC_1989__30_1_a15,
     author = {Kalina, Martin and Zlato\v{s}, Pavol},
     title = {Cuts of real classes},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {129--136},
     publisher = {mathdoc},
     volume = {30},
     number = {1},
     year = {1989},
     mrnumber = {995711},
     zbl = {0672.03037},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1989__30_1_a15/}
}