@article{CMUC_1987__28_4_a12,
     author = {\v{S}varc, Rudolf},
     title = {Some combinatorial results about the operators with jumping nonlinearities},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {707--733},
     publisher = {mathdoc},
     volume = {28},
     number = {4},
     year = {1987},
     mrnumber = {928685},
     zbl = {0652.47040},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1987__28_4_a12/}
}