Li Zhang Jieqing Tan Hongyi Wu Zhi Liu The weighted dual functions for Wang-Bézier type generalized Ball bases and their applications. 22-36 2009 215 Applied Mathematics and Computation 1 http://dx.doi.org/10.1016/j.amc.2009.04.026 db/journals/amc/amc215.html#ZhangTWL09