%0 Journal Article %A Proctor, Robert A. %A Willis, Matthew J. %T Parabolic Catalan numbers count flagged Schur functions and their appearances as type A Demazure characters (key polynomials) %J Discrete mathematics & theoretical computer science %D 2017-2018 %V 19 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.23638/DMTCS-19-3-15/ %R 10.23638/DMTCS-19-3-15 %G en %F DMTCS_2017_19_3_a14