@article{JAC_2008__28_4_a2,
     author = {McNamara, Peter R.W.},
     title = {Necessary conditions for {Schur-positivity}},
     journal = {Journal of Algebraic Combinatorics},
     pages = {495--507},
     publisher = {mathdoc},
     volume = {28},
     number = {4},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2008__28_4_a2/}
}