%0 Journal Article %A M. Hoffmann %A I. Juh�sz %T Symmetric Alteration of Two Knots of B-Spline Curves %J Journal for geometry and graphics %D 2005 %P 43-49 %V 9 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JGG_2005_9_1_JGG_2005_9_1_a4/ %F JGG_2005_9_1_JGG_2005_9_1_a4