%0 Journal Article %A Kobza, Jiří %A Zápalka, Dušan %T Natural and smoothing quadratic spline. (An elementary approach) %J Applications of Mathematics %D 1991 %P 187-204 %V 36 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/AM.1991.104459/ %R 10.21136/AM.1991.104459 %G en %F 10_21136_AM_1991_104459