%0 Journal Article %A Marek Cezary Zdun %T On the iteration of the hat-functions. %J Aequationes mathematicae %D 1977 %P 181-182 %V 16 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM2_1977__16_136687/ %F AM2_1977__16_136687