@article{ELA_2003__10__a7,
     author = {Marks, Michael and Norwood, Rick and Poole, George},
     title = {The maximum number of $2\times 2$ odd submatrices in $(0,1)$-matrices},
     journal = {The electronic journal of linear algebra},
     pages = {223--231},
     publisher = {mathdoc},
     volume = {10},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2003__10__a7/}
}