%0 Journal Article %A Ibolya Szilágyi %T Note on symmetric alteration of knots of B-spline curves %J Annales mathematicae et informaticae %D 2005 %P 153-157 %V 32 %I mathdoc %U http://geodesic.mathdoc.fr/item/AMI_2005_32_a10/ %G en %F AMI_2005_32_a10