O. Davydov. On almost interpolation // J. Approx. Theory, 91 (1997), no. 3, 398–418.
O. Davydov. Stable local bases for multivariate spline spaces // J. Approx. Theory, 111 (2001), no. 2, 267–297.
O. Davydov, L. L. Schumaker. On stable local bases for bivariate polynomial spline spaces // Constr. Approx., 18 (2002), no. 1, 87–116.
O. Davydov, F. Zeilfelder. Scattered data
fitting by direct extension of local polynomials to bivariate splines // Adv. Comput. Math., 21 (2004), no. 3-4, 223–271.
O. Davydov, R. Stevenson. Hierarchical Riesz bases for $H_s(\Omega),
1<s<5/2$ // Constr. Approx., 22 (2005), no. 3, 365–394.
