00313nam a2200121Ia 4500082002100000100001900021245004700040260003300087300001600120490004500136500000500181700000500186  a515.73bSh529.SA  aShapiro, H. S.  aSmoothing and approximation of functionsb  aNew YorkbVan Nostrandc1969  aviii, 134p.  aVan Nostrand Reinhold Mathematical study  a  a