@article{CMUC_2004__45_4_a0,
     author = {Chajda, Ivan and Ho\v{s}kov\'a, \v{S}\'arka},
     title = {A factorization of quasiorder hypergroups},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {573--581},
     publisher = {mathdoc},
     volume = {45},
     number = {4},
     year = {2004},
     mrnumber = {2103075},
     zbl = {1101.20051},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2004__45_4_a0/}
}