@article{JAC_2012__36_3_a3,
     author = {Ardila, Federico and Serrano, Luis G.},
     title = {Staircase skew {Schur} functions are {Schur} $P$-positive},
     journal = {Journal of Algebraic Combinatorics},
     pages = {409--423},
     publisher = {mathdoc},
     volume = {36},
     number = {3},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JAC_2012__36_3_a3/}
}