@article{DMTCS_2017_19_3_a14,
     author = {Proctor, Robert A. and Willis, Matthew J.},
     title = {Parabolic {Catalan} numbers count flagged {Schur} functions and their appearances as type {A} {Demazure} characters (key polynomials)},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {19},
     number = {3},
     year = {2017-2018},
     doi = {10.23638/DMTCS-19-3-15},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.23638/DMTCS-19-3-15/}
}