%0 Journal Article %A Cattani, Eduardo %A Dickenstein, Alicia %T Planar configurations of lattice vectors and GKZ-rational toric fourfolds in $\Bbb P^6$ %J Journal of Algebraic Combinatorics %D 2004 %P 47-65 %V 19 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JAC_2004__19_1_a2/ %G en %F JAC_2004__19_1_a2