@article{CMJ_2004__54_2_a15,
     author = {Hong, Shaofang and Sun, Qi},
     title = {Determinants of matrices associated with incidence functions on posets},
     journal = {Czechoslovak Mathematical Journal},
     pages = {431--443},
     publisher = {mathdoc},
     volume = {54},
     number = {2},
     year = {2004},
     mrnumber = {2059264},
     zbl = {1080.11023},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2004__54_2_a15/}
}