Adding flexibility to piecewise quadratic curves and surfaces. - Nira Gruberger; David Levin; Charles K. Chui (Comput. Aided Geom. Des., 1993)

Basis Functions for Scattered Data Quasi-Interpolation. - Nira Gruberger; David Levin (Curves and Surfaces, 2014)

Two algorithms for periodic extension on uniform grids. - Nira Gruberger; David Levin (Numer. Algorithms, 2021)