%0 Journal Article %A De Loera, J.A. %A Liu, F. %A Yoshida, R. %T A generating function for all semi-magic squares and the volume of the Birkhoff polytope %J Journal of Algebraic Combinatorics %D 2009 %P 113-139 %V 30 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2009__30_1_a0/ %G en %F JAC_2009__30_1_a0