@article{ELA_2004-2005__12__a5,
     author = {Brualdi, Richard A. and Hwang, Suk-Geun},
     title = {A {Bruhat} order for the class of $(0,1)$-matrices with row sum vector $R$ and column sum vector $S$},
     journal = {The electronic journal of linear algebra},
     publisher = {mathdoc},
     volume = {12},
     year = {2004-2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2004-2005__12__a5/}
}