%0 Journal Article
%A Rumen K. Uluchev
%T B-Splines with Birkhoff Knots. Applications in the Approximations and Shape-Preserving Interpolation
%J Mathematica balkanica
%D 1989
%P 225
%V 3
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MABA_1989_3_2_a10/
%F MABA_1989_3_2_a10