%0 Journal Article %A Tutte, W. T. %T The Non-Biplanar Character of the Complete 9-Graph %J Canadian mathematical bulletin %D 1963 %P 319-330 %V 6 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1963-026-x/ %R 10.4153/CMB-1963-026-x %F 10_4153_CMB_1963_026_x