Byung-Gook Lee Joon-Jae Lee Jaechil Yoo An Efficient Scattered Data Approximation Using Multilevel B-Splines Based on Quasi-Interpolants. 110-117 2005 conf/3dim/2005 3DIM https://doi.org/10.1109/3DIM.2005.18 https://doi.ieeecomputersociety.org/10.1109/3DIM.2005.18 db/conf/3dim/3dim2005.html#LeeLY05